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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.

  • India-US Space Cooperation

    cooperation

    Context

    • India and the United States agreeing to advance space collaboration in several areas, under the ‘initiative on critical and emerging technology’ umbrella, including human space exploration and commercial space partnership, comes at a crucial time for both countries. This follows from the eighth meeting of the U.S.-India Civil Space Joint Working Group (CSJWG), that was held on January 30-31, 2023.

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    Limiting factors in India-U.S. space cooperation

    • Mismatch in the two nations interests in outer space: The first structural factor that limits long-term India-U.S. space cooperation is the mismatch in the two nations interests in outer space.
    • American ambitions beyond earth orbits: Although the U.S. and its partners stress the importance of maintaining capabilities in low-earth orbit, their ambitions are firmly set on the moon.
    • India’s current focus is on increasing its satellite launch capabilities: India’s scientific community focuses on building the nation’s capability in and under earth orbits. The Gaganyaan human space flight programme hopes to sustain India’s human presence in space for the long term. This is not to say that India does not aim for the moon, Mars or beyond. But India’s top priority is to substantially increase its satellite and launch capabilities in earth orbits and catch up with other spacefaring nations such as China.
    • The asymmetry in capabilities: The U.S. has the highest number of registered satellites in space. It also has a range of launch vehicles serving both commercial and national-security needs.
    • Private sector, for instance: Private entity SpaceX, for example, managed to achieve a record 61 launches in 2022, far higher than the number of launches undertaken by any other commercial entity or country. The American private sector has also assumed the challenge of replacing the International Space Station by 2030 with many smaller stations.
    • The greatest challenge for India here is lack of capacity: The country has just over 60 satellites in orbit and cannot undertake double-digit launches annually. The Indian government also opened the space industry to the private sector only in 2020. Since the U.S. already has an extensive network of partners for space cooperation, it has few technical incentives to cooperate with India.
    • Disagreements on govern space activities: Compounding these problems are disagreements on how best to govern space activities on the moon and other celestial bodies. Even though countries have a mindset to collaborate, the structural factors overpower diplomatic incentives to pursue long-term cooperation.

    cooperation

    Have you read about “NISAR”?

    • NISAR has been built by space agencies of the US and India under a partnership agreement signed in 2014.
    • The 2,800 kilograms satellite consists of both L-band and S-band synthetic aperture radar (SAR) instruments, which makes it a dual-frequency imaging radar satellite.
    • While NASA has provided the L-band radar, GPS, a high-capacity solid-state recorder to store data, and a payload data subsystem, ISRO has provided the S-band radar, the GSLV launch system and spacecraft.
    • Another important component of the satellite is its large 39-foot stationary antenna reflector.
    • Made of a gold-plated wire mesh, the reflector will be used to focus the radar signals emitted and received by the upward-facing feed on the instrument structure.

    cooperation

    Some novel solutions

    • Sustained engagement: The standard solution to induce long-term cooperation is to sustain the engagement between academics, the private sector and state-led entities in the two countries. Sustained engagement could also take the form of collaborating on highly specialised projects such as the NASA-ISRO Synthetic Aperture Radar (NISAR) mission.
    • Cooperation and collaboration between state and private entities: One form of cooperation is a partnership between state and private entities; or, as agreed in the most recent meeting, a convention of American and Indian aerospace companies to advance collaboration under the National Aeronautics and Space Administration’s (NASA) Commercial Lunar Payload Services (CLPS) programme. Such an arrangement could be taken further.
    • Reducing dependence: India could send its astronauts to train at American private companies. This could help India reduce its dependence on Russia while ISRO builds its own astronaut training centre.
    • Government-owned New Space India Limited: Another novel arrangement could be a consortium led by the government-owned New Space India Limited which involves private companies in the U.S. This setup could accelerate India’s human spaceflight programme and give the U.S. an opportunity to accommodate Indian interests in earth orbits.

    Conclusion

    • The US and India have taken significant strides in advancing the private space sector. Together, these endeavors have the capability to shape and impact U.S. and Indian space policies and programmes over the next decade.

    Mains question

    Q. The US and India have taken significant strides in space cooperation. Discuss the limiting factors and suggest probable solutions.

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  • Scientists discover new ‘Quasicrystals’

    quasicrystals

    Scientists have discovered a new type of quasicrystal, one with 12-fold symmetry, in the Sand Hills of north central Nebraska, USA.

    What is a Quasicrystal?

    • Quasicrystal is essentially a crystal-like substance.
    • However, unlike a crystal, in which atoms are arranged in a repeating pattern, a quasicrystal consists of atoms that are arranged in a pattern that doesn’t repeat itself regularly.
    • For the longest time, physicists believed every crystalline arrangement of atoms must have a pattern that repeats itself perfectly over and over again.
    • However, this changed in 1982, when material scientist Dan Shechtman discovered crystal structures that are mathematically regular, but that do not repeat themselves.

    How are they formed?

    • Electrical discharge triggered quasicrystal formation in the recent finding.
    • It’s also the first time that researchers have found a quasicrystal somewhere other than meteorites or the debris from nuclear blasts.

    Applications of quasicrystals

    • There is no major commercial applications yet exploit properties of the quasicrystalline state directly.
    • Quasicrystals form in compounds noted for their high strength and light weight, suggesting potential applications in aerospace and other industries.
    • They can be used in surgical instruments, LED lights and non-stick frying pans.

     

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  • In news: Agasthyarkoodam Observatory

    agasthyarkoodam

    Agasthyarkoodam was once home to a forgotten and long-lost 19th-century observatory established by Scottish meteorologist John Allan Broun.

    Agasthyarkoodam Observatory

    • The Agasthyarkoodam Observatory is an astronomical research observatory located in the state of Kerala.
    • The observatory is situated at an altitude of 1600 meters above sea level and is owned and operated by the Indian Institute of Astrophysics (IIA).
    • The observatory is equipped with a 1-meter optical telescope and various other instruments for studying the night sky.
    • The observatory is used for research and educational purposes and is open to the public for viewing night-sky objects.

    Why in news?

    • Agasthyarkoodam in the Western Ghats once housed a magnetic observatory that was established by Scottish meteorologist John Allan Broun.
    • Broun used it to record magnetic and meteorological observations in tandem with the Thiruvananthapuram astronomical observatory.
    • Broun’s astronomical research in India began after he was invited by the ruler of the erstwhile Travancore Uthram Tirunal Marthanda Varma to helm the Thiruvananthapuram observatory following the death of its first director John Caldecott in 1849.
    • The observatory started recording observations in July 1855.
    • However, it was closed in 1881 by the then Madras Governor Sir William Denison.

    What are magnetic observatories?

    • Magnetic observatories continuously measure and record Earth’s magnetic field at a number of locations.
    • In an observatory of this sort, magnetized needles with reflecting mirrors are suspended by quartz fibres.
    • Light beams reflected from the mirrors are imaged on a photographic negative mounted on a rotating drum.
    • Variations in the field cause corresponding deflections on the negative.
    • Their magnetograms are photographed on microfilm and submitted to world data centres, where they are available for scientific or practical use.

     

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  • What is Solar Prominence?

    solar

    Recently, the sun puzzled many scientists with a large prominence near its north pole.

    What is Solar Prominence?

    • A solar prominence (also known as a filament when viewed against the solar disk) is a large, bright feature extending outward from the Sun’s surface.
    • Prominences are anchored to the Sun’s surface in the photosphere, and extend outwards into the Sun’s hot outer atmosphere, called the corona.
    • A prominence forms over timescales of about a day, and stable prominences may persist in the corona for several months, looping hundreds of thousands of miles into space.

    How are they formed?

    • Scientists are still researching how and why prominences are formed.
    • The red-glowing looped material is plasma, a hot gas comprised of electrically charged hydrogen and helium.
    • The prominence plasma flows along a tangled and twisted structure of magnetic fields generated by the sun’s internal dynamo.
    • An erupting prominence occurs when such a structure becomes unstable and bursts outward, releasing the plasma.

     

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  • Artificial Intelligence (AI) in Healthcare: Applications, Concerns and regulations

    AI

    Context

    • Artificial Intelligence (AI) was regarded as a revolutionary technology around the early 21st century. Although it has encountered its rise and fall, currently its rapid and pervasive applications have been termed the second coming of AI. It is employed in a variety of sectors, and there is a drive to create practical applications that may improve our daily lives and society. Healthcare is a highly promising, but also a challenging domain for AI.

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    ChatGPT: The latest model

    • While still in its early stages, AI applications are rapidly evolving.
    • For instance, ChatGPT is a large language model (LLM) that utilizes deep learning techniques that are trained on text data.
    • This model has been used in a variety of applications, including language translation, text summarisation, conversation generation, text-to-text generation and others.

    AI

    What is Artificial Intelligence?

    • AI is a constellation of technologies that enable machines to act with higher levels of intelligence and emulate the human capabilities of sense, comprehend and act.
    • The natural language processing and inference engines can enable AI systems to analyze and understand the information collected.
    • An AI system can also take action through technologies such as expert systems and inference engines or undertake actions in the physical world.
    • These human-like capabilities are augmented by the ability to learn from experience and keep adapting over time.
    • AI systems are finding ever-wider application to supplement these capabilities across various sectors.

    AI

    Concerns of Using AI tools in medical field

    • The potential for misinformation to be generated: As the model is trained on a large volume of data, it may inadvertently include misinformation in its responses. This could lead to patients receiving incorrect or harmful medical advice, potentially leading to serious health consequences.
    • The potential for bias to be introduced into the results: As the model is trained on data, it may perpetuate existing biases and stereotypes, leading to inaccurate or unfair conclusions in research studies as well as in routine care.
    • Ethical concerns: In addition, AI tools’ ability to generate human-like text can also raise ethical concerns in various sectors such as in the research field, education, journalism, law, etc.
    • For example: The model can be used to generate fake scientific papers and articles, which can potentially deceive researchers and mislead the scientific community.

    AI

    AI tools should be used with caution considering the context

    • Governance framework: The governance framework can help manage the potential risks and harms by setting standards, monitoring and enforcing policies and regulations, providing feedback and reports on their performance, and ensuring development and deployment with respect to ethical principles, human rights, and safety considerations.
    • Ensuring the awareness about possible negative consequences: Additionally, governance frameworks can promote accountability and transparency by ensuring that researchers and practitioners are aware of the possible negative consequences of implementing this paradigm and encouraging them to employ it responsibly.
    • A platform for dialogue and exchange of information: The deployment of a governance framework can provide a structured approach for dialogue and facilitate the exchange of information and perspectives among stakeholders, leading to the development of more effective solutions to the problem.

    AI

    Approach for the effective implementation of AI regulation in healthcare

    • Relational governance model into the AI governance framework: Relational governance is a model that considers the relationships between various stakeholders in the governance of AI.
    • Establishing international agreements and standards: At the international level, relational governance in AI in healthcare (AI-H) can be facilitated through the establishment of international agreements and standards. This includes agreements on data privacy and security, as well as ethical and transparent AI development.
    • Use of AI in responsible manner across borders: By establishing a common understanding of the responsibilities of each stakeholder in AI governance, international collaboration can help to ensure that AI is used in a consistent and responsible manner across borders.
    • Government regulations at national level: At the national level, relational governance in AI-H can be implemented through government regulations and policies that reflect the roles and responsibilities of each stakeholder. This includes laws and regulations on data privacy and security, as well as policies that encourage the ethical and transparent use of AI-H.
    • Regular monitoring and strict compliance mechanism: Setting up periodic monitoring/auditing systems and enforcement mechanisms, and imposing sanctions on the industry for noncompliance with the legislation can all help to promote the appropriate use of AI.
    • Education and awareness at the user level: Patients and healthcare providers should be informed about the benefits and risks of AI, as well as their rights and responsibilities in relation to AI use. This can help to build trust and confidence in AI systems, and encourage the responsible use of AI-H.
    • Industry-led initiatives and standards at the industry level: The relational governance in AI-H can be promoted through industry-led initiatives and standards. This includes establishing industry standards and norms (for example, International Organization for Standardization) based on user requirements (healthcare providers, patients, and governments), as well as implementing data privacy and security measures in AI systems.

    Conclusion

    • India’s presidency of the G20 summit provides a platform to initiate dialogue on AI regulation and highlight the need for the implementation of AI regulations in healthcare. The G20 members can collaborate to create AI regulation, considering the unique needs and challenges of the healthcare sector. The set of measures, carried out at various levels, need to assure that AI systems are regularly reviewed and updated and ensure that they remain effective and safe for patients.

    Mains question

    Q. Use of AI in Healthcare is highly promising but also a challenging domain. Discuss. Suggest what should be the right approach for AI regulation in Healthcare?

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  • ISRO’s SSLV-D2 launched successfully

    sslv

    The Indian Space Research Organisation (ISRO) will undertake the second development flight of the Small Satellite Launch Vehicle (SSLV –D2).

    Payload details

    The SSLV-D2 is intended to inject ISRO’s EOS-07, U.S.-based firm Antaris’ Janus-1 and Chennai-based space start-up Space Kidz’s AzaadiSAT-2 satellites into a 450-km circular orbit in its 15 minutes flight.

    • EOS-07: is a 156.3 kg satellite designed, developed and realized by the ISRO. Its mission objective is to design and develop payload instruments compatible with microsatellite buses and new technologies that are required for future operational satellites.
    • Janus-1: Weighing around 10.2 kg, Janus-1 is a technology demonstrator, smart satellite mission based on Antaris software platform.
    • AzaadiSAT-2: A 8.7-kg satellite, AzaadiSAT-2 is a combined effort of about 750 girl students across India guided by Space Kidz India, Chennai.

    What is SSLV?

    • The SSLV is a small-lift launch vehicle being developed by the ISRO with payload capacity to deliver:
    1. 600 kg to Low Earth Orbit (500 km) or
    2. 300 kg to Sun-synchronous Orbit (500 km)
    • It would help launching small satellites, with the capability to support multiple orbital drop-offs.
    • In future a dedicated launch pad in Sriharikota called Small Satellite Launch Complex (SSLC) will be set up.
    • A new spaceport, under development, near Kulasekharapatnam in Tamil Nadu will handle SSLV launches when complete.
    • After entering the operational phase, the vehicle’s production and launch operations will be done by a consortium of Indian firms along with NewSpace India Limited (NSIL).

    Vehicle details

    (A) Dimensions

    • Height: 34 meters
    • Diameter: 2 meters
    • Mass: 120 tonnes

    (B) Propulsion

    • It will be a four stage launching vehicle.
    • The first three stages will use Hydroxyl-terminated polybutadiene (HTPB) based solid propellant, with a fourth terminal stage being a Velocity-Trimming Module (VTM).

    SSLV vs. PSLV: A comparison

    • The SSLV was developed with the aim of launching small satellites commercially at drastically reduced price and higher launch rate as compared to Polar SLV (PSLV).
    • The projected high launch rate relies on largely autonomous launch operation and on overall simple logistics.
    • To compare, a PSLV launch involves 600 officials while SSLV launch operations would be managed by a small team of about six people.
    • The launch readiness period of the SSLV is expected to be less than a week instead of months.
    • The SSLV can carry satellites weighing up to 500 kg to a low earth orbit while the tried and tested PSLV can launch satellites weighing in the range of 1000 kg.
    • The entire job will be done in a very short time and the cost will be only around Rs 30 crore for SSLV.

    Significance of SSLV

    • SSLV is perfectly suited for launching multiple microsatellites at a time and supports multiple orbital drop-offs.
    • The development and manufacture of the SSLV are expected to create greater synergy between the space sector and private Indian industries – a key aim of the space ministry.

     

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  • CAR T-Cell Therapy for treatment of Cancer

    cancer

    The new CAR T-Cell Immunotherapy holds promise for Ovarian Cancer patients over other forms of treatment.

    What are CAR T-cells?

    • Chimeric antigen receptor (CAR) T-cell therapies represent a quantum leap in the sophistication of cancer treatment.
    • Unlike chemotherapy or immunotherapy, which require mass-produced injectable or oral medication, CAR T-cell therapies use a patient’s own cells.
    • They are modified in the laboratory to activate T-cells, a component of immune cells, to attack tumours.
    • These modified cells are then infused back into the patient’s bloodstream after conditioning them to multiply more effectively.
    • The cells are even more specific than targeted agents and directly activate the patient’s immune system against cancer, making the treatment more clinically effective.
    • This is why they’re called ‘living drugs’.

    How does the therapy work?

    • In CAR T-cell therapy, the patient’s blood is drawn to harvest T-cells which are immune cells that play a major role in destroying tumour cells.
    • Researchers modify these cells in the laboratory so that they express specific proteins on their surface, known as chimeric antigen receptors (CAR).
    • They have an affinity for proteins on the surface of tumour cells.
    • This modification in the cellular structure allows CAR T-cells to effectively bind to the tumour and destroy it.
    • The final step in the tumour’s destruction involves its clearance by the patient’s immune system.

    Where is it used?

    • As of today, CAR T-cell therapy has been approved for leukaemias (cancers arising from the cells that produce white blood cells) and lymphomas (arising from the lymphatic system).
    • These cancers occur through the unregulated reproduction of a single clone of cells, that is, following the cancerous transformation of a single type of cell, it produces millions of identical copies.
    • As a result, the target for CAR T-cells is consistent and reliable.
    • CAR T-cell therapy is also used among patients with cancers that have returned after an initial successful treatment or which haven’t responded to previous combinations of chemotherapy or immunotherapy.
    • Its response rate is variable. In certain kinds of leukaemias and lymphomas, the efficacy is as high as 90%, whereas in other types of cancers it is significantly lower.

    How widespread is its use?

    • The complexity of preparing CAR T-cells has been a major barrier to their use.
    • The first clinical trial showing they were effective was published almost a decade ago; the first indigenously developed therapy in India was successfully performed only in 2022.
    • The technical and human resources required to administer this therapy are also considerable.
    • Treatments in the US cost more than a million dollars.
    • Trials are underway in India, with companies looking to indigenously manufacture CAR T-cells at a fraction of the cost.
    • The preliminary results have been encouraging.

    What are conventional cancer therapies?

    • The three major forms of treatment for any cancer are surgery (removing the cancer), radiotherapy (delivering ionising radiation to the tumour), and systemic therapy (chemotherapy- administering medicines that act on the tumour only).
    • Surgery and radiotherapy have been refined significantly over time whereas advances in systemic therapy have been unparalleled.
    • A new development on this front, currently holding the attention of many researchers worldwide, is the CAR T-cell therapy.

    Will this therapy be expensive in India as well?

    • In India, introducing any new therapy faces the twin challenges of cost and value.
    • Critics argue that developing facilities in India may be redundant and/or inappropriate as even when it becomes cheaper, CAR T-cell therapy will be unaffordable to most Indians.
    • Those who are affluent and require the therapy currently receive it abroad anyway.
    • While this is true, it may be the right answer to the wrong question.
    • Having access to a global standard of care is every patient’s right; how it can be made more affordable can be the next step.

     

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  • Bard: Google’s answer to ‘ChatGPT’

    bard

    Google has finally decided to answer the challenge and threat posed by Microsoft-backed OpenAI and its AI chatbot- ChatGPT.

    What is Bard, when can I access it?

    • Google’s Bard is functioned on LaMDA, the firm’s Language Model for Dialogue Applications system, and has been in development for several years.
    • It is what Sunder Pichai termed an “experimental conversational AI service”.
    • Google will be opening it up to trusted testers ahead of making it more widely available to the public in the coming weeks.
    • It is not yet publicly available.

    What is Bard based on?

    • Bard is built on Transformer technology—which is also the backbone of ChatGPT and other AI bots.
    • Transformer technology was pioneered by Google and made open-source in 2017.
    • Transformer technology is a neural network architecture, which is capable of making predictions based on inputs and is primarily used in natural language processing and computer vision technology.
    • Previously, a Google engineer claimed LaMDA was a ‘sentient’ being with consciousness.

    How does it work?

    • Bard draws on information from the web to provide fresh, high-quality responses.
    • In short, it will give in-depth, conversational and essay-style answers just like ChatGPT does right now.
    • It requires significantly less computing power, enabling us to scale to more users, allowing for more feedback.

    A user will be able to ask Bard to explain new discoveries from NASA’s James Webb Space Telescope to a 9-year-old, or learn more about the best strikers in football right now, and then get drills to build your skills.

     

    What about its computing power?

    • Remember running these models also requires significant computing power.
    • For instance, ChatGPT is powered by Microsoft’s Azure Cloud services.
    • This also explains why the service often runs into errors at times, because too many people are accessing it.

    Key difference between ChatGPT and Google’s Bard

    • It appears that to take on ChatGPT, Google has an ace up its sleeve: the ability to draw information from the Internet.
    • Bard draws on information from the web to provide fresh, high-quality responses.
    • ChatGPT has impressed with its ability to respond to complex queries — though with varying degrees of accuracy — but its biggest shortcoming perhaps is that it cannot access real-time information from the Internet.
    • ChatGPT’s language model was trained on a vast dataset to generate text based on the input, and the dataset, at the moment, only includes information until 2021.

    Is Bard better than ChatGPT?

    • Bard looks like a limited rollout right now.
    • Google is looking for a lot of feedback at the moment around Bard, so it is hard to say whether it can answer more questions than ChatGPT.
    • Google has also not made clear the amount of knowledge that Bard possesses.
    • For instance, with ChatGPT, we know its knowledge is limited to events till 2021.
    • Of course, it is based on LaMDA, which has been in the news for a while now.

    Why has Google announced Bard right now?

    • Bard comes as Microsoft is preparing to announce an integration of ChatGPT into its Bing Search engine.
    • Google might have invented the ‘Transformer’ technology, but it is now being seen as a latecomer to the AI revolution.
    • ChatGPT in many ways is being called the end of Google Search, given that conversational AI can give long, essay style and sometimes elegant answers to a user’s queries.
    • Of course, not all of these are correct, but then AI is capable of correcting itself as well and learning from mistakes.

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  • NASA-ISRO partnership’s NISAR and its Mission

    nisar

    An earth-observation satellite NASA-ISRO Synthetic Aperture Radar (NISAR) jointly developed by NASA and ISRO is all set to be shipped to India later this month for a possible launch in September.

    What is NISAR?

    • NISAR has been built by space agencies of the US and India under a partnership agreement signed in 2014.
    • The 2,800 kilograms satellite consists of both L-band and S-band synthetic aperture radar (SAR) instruments, which makes it a dual-frequency imaging radar satellite.
    • While NASA has provided the L-band radar, GPS, a high-capacity solid-state recorder to store data, and a payload data subsystem, ISRO has provided the S-band radar, the GSLV launch system and spacecraft.
    • Another important component of the satellite is its large 39-foot stationary antenna reflector.
    • Made of a gold-plated wire mesh, the reflector will be used to focus the radar signals emitted and received by the upward-facing feed on the instrument structure.

    What is the mission?

    • Once launched into space, NISAR will observe subtle changes in Earth’s surfaces, helping researchers better understand the causes and consequences of such phenomena.
    • It will spot warning signs of natural disasters, such as volcanic eruptions, earthquakes and landslides.
    • The satellite will also measure groundwater levels, track flow rates of glaciers and ice sheets, and monitor the planet’s forest and agricultural regions, which can improve our understanding of carbon exchange.
    • By using synthetic aperture radar (SAR), NISAR will produce high-resolution images.
    • SAR is capable of penetrating clouds and can collect data day and night regardless of the weather conditions.

     

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  • What is the North Star?

    north star

    Vice President said Parliament is the “North Star” of democracy, “a place of discussion and deliberation to realize the aspirations and dreams of the people”.

    What is North Star?

    • North Star is a metaphor to refer to something constant/permanent that leads and provides direction.
    • Polaris, also known as the North Star or the Pole Star, is a very bright star (around 2500 times more luminous than our sun) placed less than 1° away from the north celestial pole.
    • Its position and brightness have made humans use it for navigation since late antiquity.
    • It is a part of the constellation Ursa Minor and is around 323 light-years away from Earth.

    How it helps navigation?

    • It stands almost motionless in the night sky, with all the stars of the northern sky appearing to rotate around it.
    • This makes it an excellent fixed point from which to draw measurements for celestial navigation.
    • Simply the elevation of the star above the horizon gives the approximate latitude of the observer and in the northern hemisphere, if you can see Polaris you can always tell which way is north.
    • Upon crossing the equator to the South, the North Star is lost over the horizon and hence stops being a useful navigational aid.

    When the North Star was first used to navigate?

    • Polaris seems to have been first charted by the Roman mathematician and astronomer Ptolemy, who lived from about 85 to 165 B.C.
    • While there does exist some evidence pointing at how the star was used for navigation in late antiquity, it is during the ‘Age of Exploration’ that it becomes such a central part of human history.
    • Christopher Columbus, on his first trans-Atlantic voyage of 1492, “had to correct (his ship’s bearings) for the circle described by the pole star about the pole”, wrote his son in his biography.
    • As European colonizers set sail for exotic locations across the world, the North Star became an ever-so-important feature.

     

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