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GS Paper: GS3-17.Awareness in the fields of IT, Space, Computers, Robotics, Nano-technology, Bio-technology and issues relating to Intellectual Property Rights.

  • Kinzhal Advanced Hypersonic Missile

    Russia said that it had unleashed hypersonic missiles against an arms depot in Ukraine, the first use of the next-generation weapons in combat.

    Kinzhal Missile

    • It is a nuclear-capable air-launched ballistic missile that flies at 10 times the speed of sound and can overcome air-defence systems. Kinzhal means ‘dagger’.
    • The missile has a range of approximately 1,500-2,000km and can carry a nuclear payload or conventional payload of 480 kg.
    • The Kinzhal was one of an array of new weapons Russian President Vladimir Putin unveiled in his state-of-the-nation address in 2018. Putin had termed Kinzhal as “an ideal weapon”.
    • This is the first time that Russia has admitted to using the high-precision weapon in combat.
    • Following launch, the Kinzhal rapidly accelerates to Mach 4 (4,900 km/h), and may reach speeds of up to Mach 10 (12,350 km/hr).

    What is a hypersonic weapon?

    • They are normally defined as fast, low-flying, and highly manoeuvrable weapons designed to be too quick and agile for traditional missile defence systems to detect in time, according to Bloomberg.
    • Unlike ballistic missiles, hypersonic weapons don’t follow a predetermined, arched trajectory and can maneuver on the way to their destination.
    • The term “hypersonic” describes any speed faster than five times that of sound, which is roughly 760 miles (1,220 kilometers) per hour at sea level.
    • At hypersonic speeds, the air molecules around the flight vehicle start to change, breaking apart or gaining a charge in a process called ionization.
    • This subjects the hypersonic vehicle to “tremendous” stresses as it pushes through the atmosphere.

    Types of hypersonic weapons

    • There are two main types of these weapons — glide vehicles and cruise missiles.
    • Most of the attention is focused on the former, which are launched from a rocket before gliding to their target, because of the challenges of achieving hypersonic propulsion of missiles.
    • The missiles have engines called scramjets that use the air’s oxygen and produce thrust during their flight, allowing them to cruise at a steady speed and altitude.

    Who has these weapons?

    • US, China and Russia have the most advanced capabilities.
    • Several other countries are investigating the technology, including India, Japan, Australia, France, Germany and North Korea, which claims to have tested a hypersonic missile.
    • In fact, India is also closing in on having such weapons in its arsenal.
    • Last year, India successfully tested its hypersonic technology demonstrator vehicle (HSTDV), powered by a scramjet engine.
    • The HSTDV will serve as a crucial building block in the development of long-range hypersonic weapons, which will take at least another four to five years to become a reality.

    Back2Basics: Types of Missiles

    (1) Subsonic missiles

    • They travel at a rate slower than the speed of sound.
    • Most well-known missiles, such as the US Tomahawk cruise missile, the French Exocet, and the Indian Nirbhay, fall into this category.
    • These travel at about Mach-0.9 (705 mph), and are slower and easier to intercept, but they continue to play a significant role in modern battlefields.
    • They significantly less expensive to produce because the technological challenges have already been overcome and mastered.
    • Due to their low speed and small size, subsonic missiles provide an additional layer of strategic value.

    (2) Supersonic missiles

    • They are the one that travels faster than the speed of sound (Mach 1) but not faster than Mach-3.
    • Most supersonic missiles travel at speeds ranging from Mach-2 to Mach-3, or up to 2,300 mph.
    • The Indian/Russian BrahMos, currently the fastest operational supersonic missile capable of speeds of around 2,100–2,300 mph, is the most well-known supersonic missile.

    (3) Hypersonic Missiles

    Explained above

     

  • What is Daylight Saving Time (DST)?

    The United States Senate unanimously passed a law making daylight saving time (DST) permanent, scrapping the biannual practice of putting clocks forward and back coinciding with the arrival and departure of winter.

    What does this imply?

    • With clocks in the US going back an hour, the time difference between New York and India will increase from the current nine and a half hours to ten and a half hours.
    • In the Southern Hemisphere, the opposite has happened, where countries have “sprung forward”, and time difference with India has reduced.

    What is DST?

    • DST is the practise of resetting clocks ahead by an hour in spring, and behind by an hour in autumn (or fall).
    • During these months, countries that follow this system get an extra hour of daylight in the evening.
    • Because the spring to fall cycle is opposite in the Northern and Southern Hemispheres, DST lasts from March to October/November in Europe and the US, and from September/October to April in New Zealand and Australia.
    • Dates for this switch, which happens twice a year (in the spring and autumn) are decided beforehand.
    • By law, the 28 member states of the EU switch together — moving forward on the last Sunday of March and falling back on the last Sunday in October.
    • In the US, clocks go back on the first Sunday of November.

    Now try this PYQ:

    Q.On 21st June, the Sun

    (a) Does not set below the horizon at the Arctic Circle

    (b) Does not set below the horizon at Antarctic Circle

    (c) Shines vertically overhead at noon on the Equator

    (d) Shines vertically overhead at the Tropic of Capricorn

    How many countries use DST?

    • DST is in practice in some 70 countries, including those in the European Union.
    • India does not follow DST; since countries near the Equator do not experience high variations in daytime hours between seasons.
    • There is, however, a separate debate around the logic of sticking with an only one-time zone in a country as large as India.

    What does this system mean to achieve?

    • The key argument is that DST is meant to save energy.
    • The rationale behind setting clocks ahead of standard time, usually by 1 hour during springtime, is to ensure that the clocks show a later sunrise and later sunset — in effect a longer evening daytime.
    • Individuals will wake an hour earlier than usual, complete their daily work routines an hour earlier, and have an extra hour of daylight at the end.

  • What are Man-Portable Air-Defence Systems (MANPADS)?

    The United States has approved a $200-million arms package for Ukraine, which would include US made Stinger Missiles, which are a type of shoulder-fired Man-Portable Air-Defence Systems (MANPADS).

    What are MANPADS?

    • Man-Portable Air-Defence Systems are short-range, lightweight and portable surface-to-air missiles that can be fired by individuals or small groups to destroy aircraft or helicopters.
    • They help shield troops from aerial attacks and are most effective in targeting low-flying aircrafts.
    • MANPATs or Man-Portable Anti-Tank Systems work in a similar manner but are used to destroy or incapacitate military tanks.

    Uniqueness of MANPADS

    • MANPADS can be shoulder-fired, launched from atop a ground-vehicle, fired from a tripod or stand, and from a helicopter or boat.
    • They weigh anywhere between 10 to 20 kilograms and not being longer than 1.8 metres.
    • They are fairly lightweight as compared to other elaborate weapon systems, making them easy to operate by individual soldiers.
    • Operating MANPADS requires substantially less training.
    • MANPADS have a maximum range of 8 kilometres and can engage targets at altitudes of 4.5 km.

    Stealth features

    • They have passive or ‘fire and forget’ guidance systems, meaning that the operator is not required to guide the missile to its target, enabling them to run and relocate immediately after firing.
    • The missile stays locked-on to the targeted object, not requiring active guidance from the soldier.
    • The missiles are fitted with infrared (IR) seekers that identify and target the airborne vehicle through heat radiation being emitted by the latter.

     

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  • What is Blockchain Gaming?

    Many Indian gaming companies have expressed their interest in introducing elements of Blockchain technology into their games in the near future.

    What is Blockchain?

    • Blockchain is a decentralised database that stores information.
    • It relies on technology that allows for the storage of identical copies of this information on multiple computers in a network.

    What are blockchain games?

    • To revisit our definition of blockchain games: they are online video games that are developed by integrating blockchain technology into them.
    • It can be diversified into the following components-

    (1) Non-fungible tokens

    • NFTs represent in-game virtual assets that can be owned by players, such as maps, armour or land.
    • These NFTs act as asset tags, identifying ownership of the in-game assets, and are stored on the blockchain.
    • Being on the blockchain allows the player to have a secure record of ownership of the in-game assets and also gives the assets the ability to outlive the game itself.
    • Based on the manner in which the games are designed, it also allows for the in-game assets to be transferred from one game to another.
    • It also creates transparency, since ownership records can independently be verified by any third party as well.
    • In doing so, it makes in-game assets marketable and creates a decentralized market, where they can be bought and sold by people.

    (2) Cryptocurrency

    • Cryptocurrency, such as tokens based on the Ethereum blockchain, may be used for the purchase of in-game assets.
    • These in-game purchases usually enable gamers to buy items like extra lives, coins and so on directly from the game.

    (3) Gaming coins

    • Gaming coins, such as Axie Infinity (ACS) and Enjin Coin (ENJ), are in-game cryptocurrency which may be acquired and then used for the purchase of in-game assets.
    • These gaming coins may be purchased from crypto exchanges (and eventually be traded on these crypto exchanges as well) or, in certain cases, be acquired as winnings in games that have adopted the ‘play-to-earn’ model.
    • In such games, gamers are rewarded for dedicating their time and skill to play the game with gaming coins and in-game assets.

    Need to regulate such games

    • By making in-game assets available for purchase, developers and publishers stand to earn revenue from the sale of such assets.
    • They may also embed certain rules when implementing the code for in-game assets such that a fee is paid to them every time a certain action is taken,
    • It also involves transfers of assets from one player to another.
    • It needs to be ensured that if it is permissible to offer such games in the Indian Territory and also offers protection in the form of intellectual property rights.
    • Other concerns, such as privacy and cyber security, along with how financial regulations would apply to blockchain games, would also need to be addressed.

    Regulatory aspects in India

    Most of the gaming laws were brought into effect prior to the internet era and, therefore, only contemplate regulation of gaming activities taking place in physical premises.

    (A) Legality Check

    • Since blockchain is merely the underlying technology, there is no express regulation in India.
    • It would, however, be relevant to explore the legality of the games from the lens of existing Indian gaming regulation.
    • Most Indian states regulate gaming on the basis of a distinction in law between ‘games of skill’ and ‘games of chance’.
    • Staking money or property on the outcome of a ‘game of chance’ is prohibited and subjects the guilty parties to criminal sanctions.
    • However, placing any stakes on the outcome of a ‘game of skill’ is not illegal per se and may be permissible.
    • As per two seminal judgments of the Supreme Court on this aspect, the Supreme Court recognized that no game is purely a ‘game of skill’ and almost all games have an element of chance.

    (B) Dominant Element Test

    • As such, a ‘dominant element’ test is to be utilized to determine whether chance or skill is the dominating element in determining the result of the game.
    • This ‘dominant element’ may be determined by examining whether factors such as superior knowledge, training, experience, expertise or attention of a player have a material impact on the outcome of the game.
    • While the outcomes of any ‘games of skill’ are affected by these factors, outcomes of ‘games of chance’ are premised on luck and are largely independent of the skills of the players involved.

    (C) Gaming house regulations

    • The Delhi District Court has, in the past, held that a gaming portal would be covered within the definition of a ‘common gaming house’.
    • This would be subjected to conditions where the gaming developers were to take commission / earn revenue from the game offered.
    • This is because such portals merely seek to replace the brick and mortar common gaming houses that Indian law currently envisages and has outlawed.

    Where does blockchain gaming lie within this framework?

    • There is currently a lacuna in gaming law and there are lingering question marks on its interpretation and applicability to online gaming.
    • As the law currently stands, each blockchain game must first pass muster as a ‘game of skill’, as against a ‘game of chance’, to legally be made available in most Indian states.
    • In the past, the Supreme Court has rejected the notion of video games being ‘games of skill’.

    Possible protections available to blockchain games

    (a) Patents:

    • For a blockchain game or any of its elements to be patented in India if it meets the requirements of novelty, involving an inventive step, and industrial application.
    • In terms of Section 3(k) of the Patent Act, 1970, computer programs are per se not inventions and hence, cannot be patented.
    • However, judicial pronouncements in the past have clarified that if an invention has a technical contribution or a technical effect and is not merely a computer program per se, then it would be patentable.

    (b) Trademarks:

    • A trademark is used as an identifying mark to determine the source of a particular good or service, and is obtained to protect the goodwill and reputation of the brand.
    • Any distinguishing mark in a blockchain game or NFT that would allow consumers to identify the source of that particular game or NFT may be trademarked.

    (c) Copyrights:

    • In India, artistic work, musical work, cinematographic films, dramatic works, sound recordings and computer software are capable being of being protected under copyright law.
    • Although there is no specific provision in the Copyright Act that deals with video games, copyright protection of video games may be sought under the category of ‘multimedia products’.
    • Similar to the position with trademarks, the process of obtaining a copyright for a blockchain game would be the same as any other online video game.

    Future roadmap

    • The Finance Ministry had announced in late-2021 that The Cryptocurrency and Regulation of Official Digital Currency Bill, 2021 would seek to prohibit all private cryptocurrencies.
    • If the legislature does indeed successfully, then, to the extent that existing blockchain games rely on cryptocurrencies, they would be considered illegal in India.
    • Independent of this, the Budget announced that the income from the transfer of any ‘virtual digital assets’ (which include cryptocurrency and non-fungible tokens) would be subject to income tax at the rate of 30%.
    • Policy pronouncements of this nature would need to be carefully considered by publishers of blockchain games while designing their pricing models.

     

     

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  • Functioning of the ISS after US sanctions

    Western sanctions against Russia could cause the International Space Station (ISS) to crash, the head of Russian space agency Roscosmos has warned.

    What is the ISS?

    • The ISS was launched in 1998 as part of joint efforts by the U.S., Russia, Japan, Canada and Europe.
    • The idea of a space station originated in the 1984 State of the Union address by former U.S. President Ronald Reagan.
    • The space station was assembled over many years, and it operates in low-earth orbit.
    • Since its inception, it has served as a laboratory suspended in space and has aided multiple scientific and technological developments.
    • The ISS was originally built to operate for 15 years.

    Why was ISS launched?

    • A space station permits quantum leaps in research in science, communications, and in metals and lifesaving medicines which could be manufactured only in space.
    • ISS has consistently maintained human presence for the past 21 years, providing astronauts with sophisticated technologies for scientific research.

    What is Russia’s role in maintaining the ISS?

    • The ISS is built with the co-operation of scientists from five international space agencies — NASA of the U.S., Roscosmos of Russia, JAXA of Japan, Canadian Space Agency and the European Space Agency.
    • Each agency has a role to play and a share in the upkeep of the ISS.
    • Both in terms of expense and effort, it is not a feat that a single country can support.
    • Russia’s part in the collaboration is the module responsible for making course corrections to the orbit of the ISS.
    • They also ferry astronauts to the ISS from the Earth and back.
    • Until SpaceX’s dragon spacecraft came into the picture the Russian spacecrafts were the only way of reaching the ISS and returning.

    Why does the orbit of the ISS need to be corrected?

    • Due to its enormous weight and the ensuing drag, the ISS tends to sink from its orbit at a height of about 250 miles above the Earth.
    • It has to be pushed up to its original line of motion every now and then.
    • This is rather routine, even for smaller satellites.
    • Approximately once a month this effort has to be made.
    • The other reason for altering the path of the ISS is to avoid its collision with space debris, which can damage the station.

    What is the extent of effort and expense involved in this?

    • Manoeuvring the ISS is expensive.
    • In a year, 7-8 tonnes of fuel may need to be spent, with each manoeuvre costing nearly a tonne of fuel.
    • If a manoeuvre is put off for later, the ISS may sink a little more and the delayed operation would cost more as a larger correction needs to be made.

    Risks of crashing

    • The orbit of the ISS does not fly over the Russian territory mostly.
    • Places that are closer to the equator run a greater risk of it falling in their domain.
    • The orbit is at about 50 degrees and so most probably, the ISS will fall in that level.
    • But this is only a probability, as it can move or disintegrate.
    • But in case of this eventuality, people in the ISS will be brought back, modules can be detached thereby making it much smaller which will ensure that it disintegrates before touching the earth.

     

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  • [pib] Petascale Supercomputer “PARAM Ganga” established at IIT Roorkee

    The National Supercomputing Mission (NSM) has now deployed “PARAM Ganga”, a supercomputer at IIT Roorkee, with a supercomputing capacity of 1.66 Petaflops.

    What is a Supercomputer?

    • A supercomputer is a computer with a high level of performance as compared to a general-purpose computer.
    • The performance of a supercomputer is commonly measured in floating-point operations per second (FLOPS) instead of million instructions per second (MIPS).
    • Since 2017, there are supercomputers which can perform over a hundred quadrillion FLOPS (peta FLOPS).
    • Since November 2017, all of the world’s fastest 500 supercomputers run Linux-based operating systems.

    PARAM Ganga

    • PARAM Ganga is designed and commissioned by C-DAC under Phase 2 of the build approach of the NSM.
    • It is based on a heterogeneous and hybrid configuration of Intel Xeon Cascade lake processors, and NVIDIA Tesla V100.
    • There are 312 (CPU+GPU+HM) nodes with a total peak computing capacity of 1.67 (CPU+GPU+HM) PFLOPS performance.
    • The cluster consists of compute nodes connected with the Mellanox (HDR) InfiniBand interconnect network.
    • The system uses the Lustre parallel file system and operating system is CentOS 7.x.

    Back2Basics: National Supercomputing Mission (NSM)

    • NSM is a proposed plan by GoI to create a cluster of seventy supercomputers connecting various academic and research institutions across India.
    • In April 2015 the government approved the NSM with a total outlay of Rs.4500 crore for a period of 7 years.
    • The mission was set up to provide the country with supercomputing infrastructure to meet the increasing computational demands of academia, researchers, MSMEs, and startups by creating the capability design, manufacturing, of supercomputers indigenously in India.
    • Currently there are four supercomputers from India in Top 500 list of supercomputers in the world.

    Aims and objectives

    • The target of the mission was set to establish a network of supercomputers ranging from a few Tera Flops (TF) to Hundreds of Tera Flops (TF) and three systems with greater than or equal to 3 Peta Flops (PF) in academic and research institutions of National importance across the country by 2022.
    • This network of Supercomputers envisaging a total of 15-20 PF was approved in 2015 and was later revised to a total of 45 PF (45000 TFs), a jump of 6 times more compute power within the same cost and capable of solving large and complex computational problems.

    When did India initiate its efforts to build supercomputers?

    • India’s supercomputer program was initiated in the late 1980s, when the United States ceased the export of a Cray Supercomputer due to technology embargos.
    • This resulted in India setting up C-DAC in 1988, which in 1991, unveiled the prototype of PARAM 800, benchmarked at 5 Gflops. This supercomputer was the second-fastest in the world at that time.
    • Since June 2018, the USA’s Summit is the fastest supercomputer in the world, taking away this position from China.
    • As of January 2018, Pratyush and Mihir are the fastest supercomputers in India with a maximum speed of Peta Flops.

    What are the phases of the National Supercomputing Mission?

    Phase I:

    • In the first phase of the NSM, parts of the supercomputers are imported and assembled in India.
    • A total of 6 supercomputers are to be installed in this phase.
    • The first supercomputer that was assembled indigenously is called Param Shivay. It was installed in IIT (BHU) located in Varanasi.
    • Similar systems, Param Shakti (IIT Kharagpur) and Param Brahma (IISER, Pune) were also later installed within the country.
    • The rest will be installed at IIT Kanpur, IIT Hyderabad and Jawaharlal Nehru Institute of Advanced Studies (JNIAS).

    Phase II:

    • The supercomputers that are installed so far are about 60% indigenous.
    • The 11 systems that are going to be installed in the next phase will have processors designed by the Centre for Development of Advanced Computing (C-DAC) and will have a cumulative capacity of 10 petaflops.
    • These new systems are to be constructed more cost-effectively than the previous ones.
    • One of the 11 proposed supercomputers will be installed
    • at C-DAC exclusively for small and medium enterprises so that they can train employees as well as work on supercomputers at a very low cost.

    Phase III:

    • The third phase aims to build fully indigenous supercomputers.
    • The government had also approved a project to develop a cryogenic cooling system that rapidly dispels the heat generated by a computing chip. This will be jointly built together by IIT-Bombay and C-DAC.

     

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  • What are Cluster Bombs and Thermobaric Weapons?

    Human rights group Amnesty International has accused Russia of using cluster bombs and vacuum bombs in the ongoing war.

    What are Cluster Munitions?

    • According to the 2008 Convention on Cluster Munitions, a cluster munition means a “conventional munition that is designed to disperse or release explosive submunitions each weighing less than 20 kilograms, and includes those explosive submunitions”.
    • Essentially, cluster munitions are non-precision weapons that are designed to injure or kill human beings indiscriminately over a large area.
    • They are often designed to destroy vehicles and infrastructure such as runways, railway or power transmission lines.
    • They can be dropped from an aircraft or launched in a projectile that spins in flight, scattering many bomblets as it travels.
    • Many of these bomblets end up not exploding, but continue to lie on the ground, often partially or fully hidden and difficult to locate and remove, posing a threat to the civilian population.
    • The Convention on Cluster Munitions specifically identifies “cluster munition remnants”, which include “failed cluster munitions, abandoned cluster munitions, unexploded submunitions and unexploded bomblets”.

    And what is a Thermobaric Weapon?

    • Thermobaric weapons — also known as aerosol bombs, fuel air explosives, or vaccum bombs — use oxygen from the air for a large, high-temperature blast.
    • A thermobaric weapon causes significantly greater devastation than a conventional bomb of comparable size.
    • The weapons, which go off in two separate stages, can be fired as rockets from tank-mounted launchers or dropped from aircraft.
    • As they hit their target, a first explosion splits open the bomb’s fuel container, releasing a cloud of fuel and metal particles that spreads over a large area.
    • A second explosion then occurs, igniting the aerosol cloud into a giant ball of fire and sending out intense blast waves that can destroy even reinforced buildings or equipment and vaporise human beings.

    Is it legal to use these weapons?

    • Countries that have ratified the Convention on Cluster Munitions are prohibited from using cluster bombs.
    • As of date, there are 110 state parties to the convention, and 13 other countries have signed up but are yet to ratify it.
    • Neither Russia nor Ukraine are signatories.
    • These bombs are not prohibited by any international law or agreement, but their use against civilian populations in built-up areas, schools or hospitals, could attract action under the Hague Conventions of 1899 and 1907.
    • International humanitarian law prohibits the use of inherently indiscriminate weapons such as cluster munitions.
    • Launching indiscriminate attacks that kill or injure civilians constitutes a war crime.

     

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  • Antonov AN-225: World’s largest aircraft

    Amid Moscow’s assault on Ukraine, the world’s largest cargo aircraft, the Antonov AN-225 or ‘Mriya’, was destroyed by Russian troops during an attack on an airport near Kyiv.

    Antonov AN-225

    • With a wingspan of over 290-feet, the unique Antonov AN-225 was designed in what was then the Ukrainian USSR during the 1980s amid a tense race to space between the US and the Soviet Union.
    • The plane, nicknamed ‘Mriya’ or ‘dream’ in Ukrainian, is very popular in aviation circles, and is known to attract huge crowds of fans at air shows around the world.
    • It was initially designed as part of the Soviet aeronautical program to carry the Buran, which was the Soviet version of the US’ Space Shuttle.
    • After the collapse of the Soviet Union in 1991, when the Buran program was cancelled, the aircraft was instead used to transport massive cargo loads.

    Its manufacturing

    • Only one AN-225 was ever built by the Kyiv-based Antonov Company, the defence manufacturers who originally designed the plane.
    • It is essentially a large version of another design by the Antonoc Company — the four-engine An-124 ‘Condor’, which is used by the Russian Air Force.
    • The aircraft first took flight in 1988 and has been in use ever since.
    • In the recent past, it has been used for delivering relief supplies during calamities in neighbouring nations.

     

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  • NASA to decommission the International Space Station

    The National Aeronautics and Space Administration (NASA) has announced plans to retire and decommission the International Space Station (ISS) by 2031.

    What is the ISS?

    • The ISS was launched in 1998 as part of joint efforts by the U.S., Russia, Japan, Canada and Europe.
    • The idea of a space station originated in the 1984 State of the Union address by former U.S. President Ronald Reagan.
    • The space station was assembled over many years, and it operates in low-earth orbit.
    • Since its inception, it has served as a laboratory suspended in space and has aided multiple scientific and technological developments.
    • The ISS was originally built to operate for 15 years.

    Why was ISS launched?

    • A space station permits quantum leaps in research in science, communications, and in metals and lifesaving medicines which could be manufactured only in space.
    • ISS has consistently maintained human presence for the past 21 years, providing astronauts with sophisticated technologies for scientific research.

    Why is NASA planning to decommission the ISS?

    • The space station has already surpassed that checkpoint by being active for 21 years, with plans to continue operations till 2030.
    • The ISS goes through 16 rotations of the earth per day, causing extreme temperature changes on the exterior.
    • The side facing the sun can get heated up to 121°C while the temperature on the opposite, darker side can fall to –157°C, causing intense expansion and contraction of the building material.
    • This orbital thermal cycling, coupled with dynamic loading, affects the longevity of the primary structure of the space station.
    • The technical lifetime is also limited by parts like radiators, modules and truss structures that tend to degrade over time.

    What is the procedure to de-orbit the ISS?

    • NASA plans to remove the ISS from its orbit around the earth and eventually plunge it into the ocean at a point farthest from human civilisation.
    • The space agency will use the dual method of natural orbit decay and a re-entry manoeuvre to bring an end to the ISS as we know it.
    • According to the plan, the earth’s natural atmospheric drag will be used in lowering the altitude of the ISS while setting up the de-orbit.
    • The space station operators will then provide the final push to it to lower the structure to the maximum possible height and ensure safe re-entry into the earth’s atmosphere.
    • It would then lead to Point Nemo over the South Pacific Oceanic Uninhabited Area (SPOUA).
    • Dissembling process would have posed huge logistical and financial challenges.

    How big is it?

    • The ISS is a huge structure — almost the size of a football field — and it was not designed to be disassembled easily in space.
    • The station currently operates in low-earth orbit above 400 km in altitude, at a point where it still experiences atmospheric drag and requires re-boosts to continue in its orbit.
    • The station also has a mass of over 4,30,000 kg.
    • Existing propulsion systems do not have the capacity to raise the station’s altitude to a high target and escape low-earth orbit.
    • The random re-entry method was discarded since it carries a huge risk for the human population on the ground.

    What is the future of space stations?

    • As the ISS plans to end operations in space, new players are already lining up to replace it.
    • In January 2022, China announced that its space station will be ready for operations this year.
    • Blue Origin, the aerospace company founded by Jeff Bezos, has also announced its plans to build Orbital Reef, a commercially developed, owned, and operated space station in low-earth orbit.
    • Blue Origin is working alongside Sierra Space on the project.

     

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  • All you need to know about Satellite Internet

    The Reliance has launched a joint venture (JV) with European satellite-based broadband service company SES to enter the satellite internet space.

    What is Satellite Internet?

    • The technology beams the internet down from a satellite that’s orbiting the Earth.
    • Jio, Bharti Airtel Ltd’s OneWeb, and billionaire Elon Musk’s Starlink want to send thousands of these satellites to orbit.
    • OneWeb plans to launch 648 satellites, while Musk’s Starlink has permits to launch over 4,000 of them.
    • So far, OneWeb has launched over 400 satellites, while Starlink has launched over 2,000 satellites.
    • It’s worth noting that Starlink plans to launch 42,000 satellites in the coming decade. Jio’s journey has only just begun.

    Which satellites will Indian JV use?

    • The JV will use geostationary (GEO) and medium earth orbit (MEO) satellites, while Starlink and OneWeb use low earth orbit (LEO) satellites.
    • LEO satellites are cheaper to make and deploy, but require a satellite constellation working in sync to offer coverage on earth.
    • On the other hand, GEO and MEO satellites are larger, deployed in higher orbits, and therefore cost more.
    • These satellites cover a larger area and require fewer ground stations, which makes them ideal for targeted coverage area.
    • LEOs move faster and can hence provide global coverage.

    What are the advantages of satellite internet?

    • The reason telecom firms want to explore satellite internet is because there are areas where fibre connections just can’t reach.
    • Satellite networks are used to bring connectivity in such areas, which include hills and remote islands.
    • Consumer applications are new, but satellite networks have been used for ages in military applications.

    Are there any disadvantages?

    • The applications and the power of satellite internet are often exaggerated.
    • In reality, these networks have limitations, the biggest being high latency and low bandwidths.
    • Latency is all about internet speed, while bandwidth determines how many devices can connect on a network at the same time.
    • Experts say current satellite connections will bring 1-2 MB bandwidth, which just about qualifies as broadband under India’s broadband policy.
    • Trouble-shooting can be a problem because it needs specialized knowledge.

    Who can use satellite internet?

    • Militaries across the world have depended on satellite communications for a long time.
    • However, many military experts, too, consider this form to be unreliable and too expensive to be made the sole communication medium.
    • In remote areas, satellite internet can still allow businesses to open up local branches and provide digital services.
    • In theory, a bank could set up more ATMs in remote regions if it has access to satellite internet.

     

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