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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.

  • What is Exoatmospheric Interception?

    Why in the news?

    Israel successfully intercepted an Iranian missile outside Earth’s atmosphere using an Exoatmospheric kill vehicle.

    Israeli Air-Defence Systems


    Israel’s multi-layered air defence system, including Iron Dome, The Arrow, and David’s Sling, was activated in anticipation of the attack.

    1. IRON DOME: The short-range Iron Dome air defence system was built to intercept the kind of rockets fired by the Hamas in Gaza. Developed by state-owned Rafael Advanced Defense Systems with US backing, it became operational in 2011. Each truck-towed unit fires radar-guided missiles to blow up short-range threats like rockets, mortars and drones in mid-air.
    2. ARROW: The long-range Arrow-2 and Arrow-3 system, developed by Israel with an Iranian missile threat in mind, is designed to intercept ballistic missiles outside the earth’s atmosphere, using a detachable warhead that collides with the target. It operates at an altitude that allows for the safe dispersal of any non-conventional warheads.
    3. DAVID’S SLING: This mid-range system is designed to shoot down ballistic missiles fired from 100 km to 200 km away. Developed and manufactured jointly by Israel’s state-owned Rafael Advanced Defense Systems and the U.S. Raytheon Co, David’s Sling is also designed to intercept aircraft, drones and cruise missiles.

    What are Exoatmospheric Missiles?

    • Exoatmospheric missiles, or anti-ballistic missiles (ABMs), operate beyond Earth’s atmosphere to intercept incoming ballistic missiles.
    • They employ advanced sensors and guidance systems to detect, track, and destroy targets in space.
    • Kinetic kill vehicles, like the Exoatmospheric Kill Vehicle (EKV), rely on high-speed collisions to neutralize threats.
    • It travels at hypersonic speed.

    Working Mechanism of Exoatmospheric Missiles:

    • The EKV uses a solid rocket booster to propel itself into space.
    • Advanced sensors and onboard computers identify and track incoming threats.
    • Precise maneuvering allows the missile to navigate towards the target.
    • Impact from a high-speed collision eliminates the threat without traditional warheads, enhancing speed and accuracy.

    PYQ:

    [2018] What is “Terminal High Altitude Area Defense (THAAD)”, sometimes seen in the news?

    (a) An Israeli radar system

    (b) India’s indigenous anti-missile programme

    (c) An American anti-missile system

    (d) A defence collaboration between Japan and South Korea

  • Geroscience: the Science related to Ageing

    Why in the news?

    • Dr. Daniel Belsky from Columbia University introduced the concept of “Geroscience” and develops a blood test, termed “gerozyme,” to measure aging pace by studying DNA methylation.
    • Various research groups explore drugs like Metformin and Rapamycin to target aging and enhance immunity in the elderly.

    What is Geroscience?

    • Geroscience refers to the interdisciplinary field focused on understanding the biological mechanisms of ageing and age-related diseases.
    • It involves studying various factors, including DNA methylation, enzyme activity (such as the gerozyme), socio-economic influences, and lifestyle interventions like nutrition, exercise, and music therapy.
    • It aims to develop strategies, such as drug interventions targeting specific ageing-related processes, to promote healthy ageing and combat age-related conditions like dementia.

    What is DNA Methylation?

    • DNA Methylation is a process in which methyl groups (CH3) are added to the DNA molecule.
    • This modification typically occurs at cytosine bases within the DNA sequence, often in the context of CpG dinucleotides (where cytosine is followed by guanine).
    • DNA methylation plays a crucial role in regulating gene expression and maintaining genome stability.
    • It can affect various cellular processes, including embryonic development, X-chromosome inactivation, genomic imprinting, and silencing of repetitive DNA elements.
    • Aberrant DNA methylation patterns have been implicated in various diseases, including cancer and neurological disorders.

    Drug Interventions in Geroscience

    • Metformin and TORC1 inhibitors show promise in targeting aging and improving immune response in seniors.
    • Research proposes rapamycin’s potential in extending longevity and combating age-related diseases.

    Impact of Socio-Economic Factors in Ageing

    • Dr. Belsky’s research reveals the influence of socioeconomic status on DNA methylation levels, highlighting the role of disadvantage in ageing.
    • Columbia Aging Centre emphasizes the role of a balanced diet in supporting brain health and reducing inflammation.
    • Healthline.com advocates for proteins, healthy fats, and antioxidant-rich foods to promote healthy ageing, crucial for India’s ageing population.

    PYQ:

    [2011] At present, scientists can determine the arrangement or relative positions of genes or DNA sequences on a chromosome. How does this knowledge benefit us?

    1. It is possible to know the pedigree of livestock.
    2. It is possible to understand the causes of all human diseases.
    3. It is possible to develop disease-resistant animal breeds.

    Which of the statements given above is/are correct?

    (a) 1 and 2 only

    (b) 2 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

  • India, US to reactivate Indian Ocean Observing System (IndOOS)

    Why in the news?

    India and the US have decided to reactivate the Indian Ocean Observing System (IndOOS).

    What is IndOOS?

    • Established in 2006, the Indian Ocean Observing System (IndOOS) comprises moored buoys strategically placed across the Indian Ocean.
    • It consists of a network of 36 moored buoys in the high seas to collect high-resolution ocean and atmospheric data for weather forecasts.
    • These buoys measure various parameters like seawater temperature, salinity, ocean currents, atmospheric humidity, and wind speed.
    • IndOOS originally focused on understanding and predicting the monsoon.
    • It now aids in climate modelling under changing climatic conditions and predicts extreme weather events such as floods, droughts, and cyclones.

    Objectives of IndOOS include:

    1. The primary objective of IndOOS is to provide continuous and high-quality oceanographic and meteorological data to support informed decision-making and improve scientific understanding of weather and climate.
    2. It aims to foster partnerships among Indian Ocean countries and beyond to enhance long-term monitoring and forecasting capabilities.

    Need for IndOOS

    • The Indian Ocean region, home to nearly one-third of the global population, faces significant vulnerabilities due to climate change and extreme weather events.
    • Fisheries and rain-dependent agriculture in these regions are heavily influenced by the monsoon, making accurate weather forecasts crucial for mitigating potential damage to crops and livelihoods.
    • The Indian Ocean’s influence extends beyond its boundaries, redistributing heat across the planet and modulating the climate in the Pacific, North Atlantic and Mediterranean Sea.

    Observing Networks under IndOOS

    • The framework for IndOOS comprises five observing networks:
    1. Research Moored Array for African-Asian-Australian Monsoon Analysis and Prediction (RAMA)
    2. Profiling floats (part of the global Argo array)
    3. Surface drifters (Global Drifter Program, GDP)
    4. Repeat temperature lines (eXpendable Bathy Thermograph (XBT) network)
    5. Tide gauges
    • These networks are complemented by satellite observations of surface wind, sea level, temperature, salinity, rainfall, and ocean color.

    Partnerships and Support:

    • IndOOS originated from discussions among scientists during the First International Conference on the Ocean Observing System for Climate (OceanObs) in 1999.
    • An implementation plan for IndOOS was developed by the Indian Ocean Panel, established under the Climate and Ocean Variability, Predictability, and Change (CLIVAR) and Intergovernmental Oceanographic Commission – Global Ocean Observing System (IOC-GOOS) programs.

  • NASA to establish Coordinated Lunar Time

    Why in the news?

    • The White House directed NASA to establish a time standard for the Moon, named Coordinated Lunar Time (LTC) by the end of 2026.
    • This move aims to facilitate coordination among international bodies and private companies operating on the lunar surface.

    Timekeeping on the Moon

    • The Moon has its own day and night cycle, which lasts about 29.5 Earth days.
    • Currently, the time on the Moon is measured using Coordinated Universal Time (UTC), which is the same timekeeping system used on the Earth.
    • However, because the Moon’s day is much longer than Earth’s day, it would be difficult to use UTC for day-to-day activities on the Moon.

    Coordinated Universal Time (UTC)

    • UTC is a time standard introduced on January 1, 1960.
    • It is based on International Atomic Time (TAI), which is maintained by atomic clocks around the world.
    • It is the primary time standard used by many countries, international organizations, and scientific research institutions.
    • It is expressed as a 24-hour clock and is used to indicate the time offset from Coordinated Universal Time (UTC+0).
    • Time zones are defined as an offset from UTC, with some time zones being ahead of UTC (UTC+1, UTC+2, etc.) and others being behind UTC (UTC-1, UTC-2, etc.).
    • It is adjusted periodically to account for changes in the Earth’s rotation, which can cause variations in the length of a day.
    • These adjustments are made through the addition of leap seconds to UTC, which help to keep the time standard synchronized with the Earth’s rotation.

    Need for a Lunar Time Standard

    1. Earth’s Time Standard:
    • Earth’s time standard is primarily based on Coordinated Universal Time (UTC), set by the International Bureau of Weights and Measures in Paris, France.
    • UTC is determined by a weighted average of over 400 atomic clocks worldwide, providing a universally agreed-upon standard for time measurement.
    1. Challenges with Earth’s Time Standard on the Moon:
    • Time on the Moon differs from Earth due to factors like gravity and the Moon’s rotation.
    • Time on the Moon ticks slightly faster due to lower gravity (about 56 microseconds every day) as per Einstein’s Theory of General Relativity.

    Establishing a Lunar Time Standard:

    1. Technical Considerations:
    • LTC cannot be based on UTC due to the time differences between Earth and the Moon.
    • Current lunar missions operate on independent timescales linked to UTC, but this approach becomes challenging with multiple space crafts on the Moon.
    1. Deployment of Atomic Clocks:
    • Like on Earth, atomic clocks can be deployed on the lunar surface to establish a time standard.
    • A 2023 report suggests placing at least three atomic clocks on the Moon’s surface, accounting for variations in lunar rotation and local gravity.
    1. Synthesizing Time Measurements:
    • Atomic clocks placed at different lunar locations will tick at the Moon’s natural pace.
    • Output from these clocks will be combined using algorithms to generate a unified time standard for the Moon, tied back to UTC for Earth operations.

    Earth’s Latitudinal Variations on Time

    • On Earth, atomic clocks placed at different latitudes experience variations in time due to differences in rotational speed of Earth.
    • Earth rotates faster at the Equator compared to the poles, resulting in different time measurements.

    Benefits offered by Lunar Time

    • Having a lunar time zone would also make it easier for scientists and researchers to conduct experiments and collect data on the Moon.
    • It would also help to prevent confusion and errors that could arise from using different timekeeping systems on Earth and the Moon.

    PYQ:

    [2015] Tides occur in the oceans and seas due to which among the following?

    1. The gravitational force of the Sun

    2. The gravitational force of the Moon

    3. The centrifugal force of the Earth

    Select the correct option using the code given below:

    (a) 1 Only

    (b) 2 and 3 only

    (c) 1 and 3 only

    (d) 1, 2 and 3

  • Health Sector can’t ignore Telemedicine’s Green Gains, study shows

    Why in the news? 

    Recently a study by researchers at the L.V. Prasad Eye Institute (LVPEI), Hyderabad, has found that around 70-80% of people who visit an Eye Hospital can benefit from teleconsultations because their problems aren’t serious enough to require attention at a hospital.

    Key points as report:

    • Telemedicine in High-Income Countries: Studies in high-income countries have shown that telemedicine is both patient- and environment-friendly for delivering healthcare services.
    • Carbon Emissions from the Healthcare Sector: According to the International Comparison of Healthcare Carbon Footprints analysis, India’s healthcare sector emitted 74 million tonnes of carbon dioxide in 2014, around 3% of India’s total emissions of the gas that year.
    • Carbon Neutrality in Healthcare: The healthcare sector should aim for carbon neutrality to mitigate its environmental impact. Teleophthalmology is cited as an efficient and effective tool to help achieve this goal, as demonstrated by the lead author’s remarks.

    The teleophthalmology process:

    What are Telemedicine’s Green Gains?

    • Reduced Carbon Footprint: Teleophthalmology significantly reduces the need for patients, especially those from rural areas, to travel long distances to access healthcare services. This leads to a substantial reduction in carbon dioxide emissions, contributing to environmental sustainability.
    • Economic Gains: Teleophthalmology results in significant cost savings for both patients and healthcare systems. Patients save money on travel expenses
    • Easy Accessibility: Teleophthalmology improves access to eye care services, especially for individuals living in remote or rural areas where access to healthcare facilities is limited. It allows patients to receive timely consultations without the need for extensive travel.
    • Targeted Care Gains: Teleophthalmology is particularly beneficial for patients with minor eye problems like mild refractive errors or regular preventive eye check-ups. It enables healthcare providers to target specific demographics and deliver personalized care more effectively.

    Conclusion: The recent study highlights teleophthalmology’s potential in reducing carbon emissions and improving accessibility to eye care, emphasizing its role in achieving carbon neutrality and delivering cost-effective, targeted healthcare services, particularly for minor eye issues.

  • POEM-3: ISRO’s ‘Zero Orbital Debris’ Milestone

    Why in the news?

    • The Indian Space Research Organisation (ISRO) has said its PSLV-C58/XPoSat mission has practically left zero debris in earth’s orbit.

    About PSLV Orbital Experimental Module-3 (POEM-3)

    • Launched on January 1, 2024, POEM-3 utilized the spent PS4 stage of the PSLV-C58 vehicle, which initially launched XPoSat.
    • It is a three-axis-altitude controlled platform with power generation and tele-command & telemetry capabilities, for supporting Payloads.
    • The XPoSat mission aimed to leave no debris in space, demonstrating ISRO’s commitment to responsible space practices.
    • Upon deployment into its orbit at 650 km, POEM-3 was maneuvered to a 350 km circular orbit to minimize orbit decay time after the experiment’s completion.
    • After completing 400 orbits, POEM-3 re-entered Earth’s atmosphere after 73 days in space.

    Significance of this achievement

    • With the rise in the number of satellites in orbit around the earth, space debris has become a pressing issue.
    • Space debris in the low earth orbit (LEO) mainly comprises pieces of spacecraft, rockets, and defunct satellites, and the fragments of objects that have deteriorated explosively as a result of anti-satellite missile tests.
    • This debris often flies around at high speeds of up to 27,000 kilometres per hour.
    • Due to their sheer volume and momentum, they pose a risk to several space assets.

    Threats posed by Space Debris

    • Space debris also leads to two major risks:
    1. It creates unusable regions of the orbit due to excessive debris, and
    2. Leads to the ‘Kessler syndrome’ – creation of more debris due to cascading collisions resulting from one collision.

    Various Initiatives to mitigate the Space Debris Issue

    Description
    Project NETRA ISRO initiative for early warning system in space to detect debris and hazards to the Indian satellites.

    It can spot, track and catalogue objects as small as 10 cm, up to a range of 3,400 km and equal to a space orbit of around 2,000 km.
    Space Debris Mitigation Guidelines Established in 2002 by the Inter-Agency Space Debris Coordination Committee (IADC) and endorsed by the United Nations in 2007.
    Zero Debris Charter by ESA Adopted by the European Space Agency (ESA) with the goal of achieving zero space debris by 2030.
    NASA’s Orbital Debris Program NASA’s initiative since 1979, focusing on reducing orbital debris creation, tracking existing debris, and exploring debris removal technologies.
    Space Force Tracking System Implemented by the U.S. Space Force to monitor space debris and assess collision risks in low Earth orbit (LEO).
    Chinese Debris Removal Initiatives China’s efforts include deploying spacecraft for debris removal with innovative technologies like solar sails.
    Japanese CRD2 Demonstration Partnership between Japan’s Aerospace Exploration Agency (JAXA) and Astroscale to develop debris removal technologies.

     

    Practice MCQ:

    ISRO’s PSLV Orbital Experimental Module-3 (POEM-3) recently re-entered Earth’s Orbit. What is so significant about this re-entry?

    (a) It practically left zero debris in earth’s orbit.

    (b) It facilitated groundbreaking research on the effects of microgravity on biological organisms.

    (c) It paved the way for the development of reusable spacecraft technology, reducing the cost of future space missions.

    (d) None of these.

  • What is the technology behind manufacturing a semiconductor chip?

    Why in the News? 

    The Union Cabinet has sanctioned the setup of three semiconductor facilities as part of the initiative to develop semiconductor and display manufacturing ecosystems in the country. One is in Assam and the other two are in Gujarat.

    Need for Semiconductor hub in India:

    • Right now, only a few countries in the world make computer chips. Due to the issues like COVID-19 pandemic and geopolitical tensions between countries, it’s become clear that we need more countries to manufacture these chips instead of Depending on the single country (Taiwan issue).
    • For example, the TATA Group, working with a company from Taiwan called Powerchip Semiconductor Manufacturing Corporation (PSMC), is building a factory in Gujarat to make chips.

    BACK2BASICS:

    What is a Semiconductor chip? How is it manufactured?

    It is a tiny electronic device made of semiconductor material (usually silicon or germanium) that serves as the basic building block of most electronic circuits. These chips can perform various functions, such as processing data, storing information, or controlling electronic devices.

    What is a transistor?

    A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power. It is a fundamental building block of modern electronic devices and circuits. Transistors can be thought of as electronic switches that can be turned on or off, or can be used to amplify electrical signals.

    What is fabrication technology?

    Fabrication technology, often referred to as semiconductor fabrication technology or semiconductor manufacturing, is the process of creating electronic devices and integrated circuits (ICs) on semiconductor materials such as silicon. It involves a series of complex steps to build electronic components, including transistors, diodes, and resistors, as well as connecting them to create functional electronic circuits.

    What is known as a wafer?

    A wafer refers to a thin, flat slice of semiconductor material, typically made of silicon. Silicon wafers are the primary substrate used in the fabrication of integrated circuits (ICs) and other semiconductor devices.

     

    Efforts made by the Indian Government to build Semiconductor Ecosystem:

    • India Semiconductor Mission (ISM): The Indian government is actively promoting semiconductor industry growth through initiatives and incentives, including the establishment of the India Semiconductor Mission (ISM) and a significant financial package to boost semiconductor and display manufacturing.
    • Effort to boost Domestic manufacturing: India is also working to attract international investments to bolster domestic manufacturing. An example of this is Micron Technology’s planned Assembly, Test, Mark, and Pack (ATMP) facility in Gujarat, with a total investment of $2.75 billion, set to produce the first “Made in India” chip by the end of 2024
    • International Partnership: The US Semiconductor Industry Association (SIA) and the India Electronics and Semiconductor Association (IESA) have decided to establish a partnership, with the US presently having a ‘Chip 4’ alliance with the world’s top semiconductor makers – Taiwan, Japan

    Conclusion: India’s semiconductor ecosystem is proliferating, backed by government initiatives like the India Semiconductor Mission and partnerships with global players. Efforts to boost domestic manufacturing and international collaborations signify India’s emergence as a key player in the semiconductor industry.

  • Govt. body hikes prices of essential medicines again, says ‘it’s minuscule’

    Why in the News? 

    Recently, the National Pharmaceutical Pricing Authority (NPPA) implemented a 0.00551% increase in the Maximum Retail Price (MRP) for scheduled formulations of drugs starting from the commencement of the fiscal year 2024–25.

    Context:

    • The Department of Pharmaceuticals has released its yearly update of revised ceiling prices for 923 scheduled drug formulations and adjusted retail prices for 65 formulations.
    • These revised ceiling rates took effect on April 1. The Central Government attributes the price adjustments to fluctuations in the Wholesale Price Index (WPI).

    What is the National List of Essential Medicines? 

    • As per the World Health Organisation (WHO), Essential Medicines are those that satisfy the priority healthcare needs of the population.
    • Ministry of Health and Family Welfare hence prepared and released the first National List of Essential Medicines of India in 1996 consisting of 279 medicines.
      • Currently, India has approximately 400 molecules and 960 formulations covered under the National List of Essential Medicines.
    • The prices of non-essential drugs are also monitored by the government to ensure that the manufacturers of these drugs don’t increase MRP by more than 10% annually.

    The issue of the present Current Price Increase:

    • Manufacturers are allowed to increase the Maximum Retail Price (MRP) of scheduled formulations based on the Wholesale Price Index (WPI) without prior government approval.
    • Pharmaceutical companies argue that a rational increase in the cost of drugs is necessary for quality control.
    • Government’s Stance on Current Hike: Despite the recent increase, the government suggests that it will only marginally impact the cost of essential drugs such as antibiotics and painkillers.
      • The National Pharmaceutical Pricing Authority (NPPA) follows the Drug Price Control Order (DPCO) of 2013, allowing price hikes in line with changes in the WPI index.
      • Medicine prices were raised by 12% last year and 10% in 2022.

    BACK2BASICS:

    1. National Pharmaceutical Pricing Authority (NPPA):

    The National Pharmaceutical Pricing Authority was set up as an attached office of the Department of Chemicals and Petrochemicals (now Department of Pharmaceuticals since July 2008) on 29th August 1997. It has been entrusted inter-alia, with the following functions

    • Enforce the provision: To implement and enforce the provisions of the Drugs Price Control Order (DPCO), 1995/2013 under the powers delegated to it and to undertake and/or sponsor relevant studies concerning the pricing of drugs/formulations.
    • Monitor Demand and supply: To monitor the availability of drugs, identify shortages, if any, and take remedial steps. To collect/maintain data on production, exports and imports, market share of individual companies, profitability of companies, etc. for bulk drugs and formulations.
    • Manage legal matters: To deal with all legal matters arising out of the decisions of the Authority. To render advice to the Central Government on changes/revisions in the drug policy.
    • Assist Government: To help the Central Government in the parliamentary matters relating to drug pricing.
    1. Drugs (Prices Control) Order (DPCO):
    • The Drugs Prices Control Order, issued by the Government of India under Section 3 of the Essential Commodities Act, 1955, aims to govern and regulate drug prices.
    • Provides the list of price-controlled drugs: The Order interalia provides the list of price-controlled drugs, procedures for fixation of prices of drugs, method of implementation of prices fixed by Govt., penalties for contravention of provisions, etc.
    • Regulate only listed drugs: According to the regulations outlined in DPCO 2013, the National Pharmaceutical Pricing Authority oversees and regulates only the prices of drugs listed in the National List of Essential Medicines (NLEM).

     

    Achievements of India’s Pharmaceutical Industry:

    • Advanced Industries: India boasts one of the most advanced pharmaceutical industries among developing nations, ranking third globally in terms of volume and 13th in terms of value.
    • Export Destinations: The United States serves as the largest export destination for bulk drugs from India. This is noteworthy considering the stringent regulatory standards in the US.
      • Other significant export destinations include Brazil, Bangladesh, Turkey, China, the Netherlands, Nigeria, Vietnam, and Egypt.
    • India’s Role as a Supplier for Global South (developing countries): India ranks among the top five suppliers of bulk drugs to several developing countries, including Bangladesh, Nigeria, Vietnam, Egypt, Iran, and Pakistan.
      • Despite China’s dominance as a larger supplier, India remains a substantial exporter in this regard.

    The challenge is Dependency on China: Despite India’s robust pharmaceutical sector, it heavily relies on China for the supply of bulk drugs and drug intermediates. Approximately two-thirds of India’s total imports in this category originate from China.

    Conclusion: The recent price increase by the NPPA aligns with fluctuations in the Wholesale Price Index, aiming to regulate drug costs. India’s pharmaceutical industry faces challenges of import dependency on China, despite its global presence.

    Mains PYQ

    Q What do you understand by Fixed Dose Drug Combinations (FDCs)? Discuss their merits and demerits. (UPSC IAS/2013)

  • India among countries mulling telescopes on, around the moon

    Why in the news? 

    Astronomers are looking forward to opening a new window on the universe by posting high-resolution telescopes on the moon and in orbit around it.

    Why Astronomers are looking forward to opening telescopes on the moon?

    • Radio telescopes launched into orbit around Earth exacerbated the problem of receiving radio noise from the entire planet, along with signals from outer space.
    • The moon’s far side offers pristine, airless conditions ideal for optical telescopes, providing crystal-clear seeing conditions during the two-week lunar night.

    Global Initiatives to Install Telescope on the Moon:

    • NASA’s LuSEE Night Project: LuSEE Night, a joint NASA-Berkeley Lab project scheduled for launch in December 2025, aims to study the Dark Ages period by landing on the far side of the moon, shielded from radio frequency noise from Earth.
    • ESA’s Projects: ESA is preparing to launch a radio telescope to the moon’s far side aboard its lunar lander, ‘Argonaut’, by 2030, along with other projects focused on gravitational wave detection and infrared observations.
    • China’s Initiatives: China is also actively involved in lunar exploration, with plans to launch a moon-orbiting radio telescope in 2026 and deploy the Queqiao-2 satellite, which includes a radio telescope payload, to serve as a communications relay between Earth and future missions.

    Indian Initiative 

    • PRATUSH: Indian scientists plan to deploy the radio telescope PRATUSH on the moon’s far side, built by the Raman Research Institute (RRI) in collaboration with the Indian Space Research Organisation (ISRO).
    • Deployment Process: Initially, ISRO will place PRATUSH into orbit around the Earth, then fine-tune it before launching it towards the moon. Operating in Earth orbit will offer advantages such as free space operation and reduced ionosphere impact compared to ground-based experiments.
    • Observational Advantages: PRATUSH in lunar orbit will have ideal observing conditions, operating in free space with minimal radio frequency interference (RFI) and no ionosphere, essential for studying the signal from the Dark Ages.
    • Instrument Features: PRATUSH will carry a wideband frequency-independent antenna, a self-calibrating analog receiver, and a digital correlator to capture radio noise in the signal from the Dark Ages.

    Conclusion: The global initiative to deploy telescopes on and around the moon aims to overcome Earth’s radio noise and capitalize on the lunar far side’s pristine conditions for groundbreaking astronomical observations, including studying the universe’s early Dark Ages.

    Mains question for practice 

    Q Discuss the global initiatives to deploy telescopes on the moon.

     

     

     

  • Mother of Dragons Comet: A Rare Celestial Phenomenon

    Why in the news?

    • The “Mother of Dragons” comet, officially named Comet 12P/Pons-Brooks, is making a rare appearance in the Northern Hemisphere skies.
    • This Halley-type comet, completing its orbit every 71 years, has emerged marking its first sighting since 1954.

    What is a Comet?

     

    • A comet is a celestial object composed primarily of ice, dust, and rocky particles that orbit the Sun in elongated, elliptical paths.
    • These icy bodies originate from the outer regions of the solar system, specifically from two regions: the Kuiper Belt and the Oort Cloud.
    • Comets are often referred to as “dirty snowballs” or “icy dirtballs” due to their composition.
    • Halley’s Comet is a short-period comet visible from Earth every 75–79 years.
    • It was last seen in Earth’s skies in 1986 and was met in space by an international fleet of spacecraft. It will return in 2061 on its regular journey around the Sun.

     

    About Mother of Dragons Comet

    • It is named by the European Space Agency (ESA).
    • The comet’s name is inspired by its link to the annual “kappa-Draconids” meteor shower, active from November 29 to December 13 each year.
    • It has a width of 17 km. the comet features an elliptical orbit adorned with a mysterious spiral of luminous light enveloping its icy nucleus.
    • It is comprised of ice, dust, rock, and diatomic carbon molecules.
    • It dissipates a radiant emerald hue when illuminated by the sun, captivating observers with its bright green appearance.

    Display Features of the Comet

    • Renowned for its cryovolcanic eruptions, the comet periodically ejects material from its icy core into space, resulting in breath-taking luminosity.
    • Its most recent eruption in July 2023, after 69 years, earned it the moniker “devil comet” due to its dramatic outburst, resembling horns likely caused by internal features.

    PYQ:

    2014:

    What is a coma, in the content of astronomy?

    (a) Bright half of material on the comet

    (b) Long tail of dust

    (c) Two asteroids orbiting each other

    (d) Two planets orbiting each other

     

    Practice MCQ:

    With reference to the “Mother of Dragons” Comet, consider the following statements:

    1.    It is named by the NASA.

    2.    It is comprised of ice, dust, rock, and diatomic carbon molecules.

    3.    It makes appearances after every 10 years.

    How many of the above statements is/are correct?

    (a) One

    (b) Two

    (c) Three

    (d) None