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GS Paper: GS3

  • In news: Dhanauri Wetland

    Why in the News?

    The NGT has ordered the UP government to remove water hyacinth from “Dhanauri wetlands” and questioned its failure to designate the wetland as a Ramsar site.

    Dhanauri Wetland

    About Dhanauri Wetland

    Details
    Location
    • Dhanauri village near Dankaur, Uttar Pradesh;
    • Floodplains of Yamuna.
    Key Species Home to over 120 Sarus Cranes (state bird of Uttar Pradesh) and 217 bird species
    Ecological Significance Important birding and nesting site; recognized as an Important Bird Area by Bird Life International
    Bird Population Hosts over 50,000 waterfowls during migratory seasons (November to March)
    Ramsar Criteria Fulfills 2 Ramsar criteria:
    1. Hosts over 1% of biogeographic Sarus Crane population
    2. Congregation site for 20,000+ waterfowls
    Conservation Status Documented by BNHS (Bombay Natural History Society); crucial for supporting endangered species

     

    Ramsar Wetlands

    • The Ramsar Convention, also known as the ‘Convention on Wetlands,’ is an intergovernmental environmental treaty founded by UNESCO in 1971.
    • It derives its name from the city of Ramsar in Iran, where it was initially signed.
    • Ramsar sites are wetlands of global significance recognized under this treaty.
    • The Montreux Record is a register of wetland sites on the brink of ecological changes and in need of close monitoring under the Ramsar Convention.

    Ramsar Site Designation Criteria:

    Ramsar site designation hinges on several factors:

    1. Representing rare or unique natural wetland types.
    2. Supporting endangered species or threatened ecological communities.
    3. Maintaining biodiversity in specific biogeographic regions.
    4. Offering refuge during adverse conditions.
    5. Regularly accommodating 20,000 or more waterbirds.
    6. Sustaining 1% of a population of a single water-bird species.
    7. Serving as a critical source of food, spawning grounds, nurseries, and migration paths for fish.
    8. Regularly supporting 1% of a population of non-avian wetland-dependent animal species.

  • How global warming affect forecasting?

    Why in the News?

    The record warming of 2023-2024 is offering a clearer view of the impacts of global warming. The range of extreme events experienced globally has spanned from deadly heatwaves to devastating cyclones and floods, as well as droughts and wildfires.

    Impact of Warming on Predictability:

    • Increased Variability: The record warming of 2023-2024 highlights the unpredictability of climate systems under global warming, complicating forecasts for natural phenomena like El Niño, monsoons, and hurricanes.
    • Natural Variability: Warming may extend the timescale of natural decadal variability, making it harder to distinguish between short-term fluctuations and long-term trends in climate behaviour.
    • Model Limitations: Despite advances, climate models are imperfect in capturing changes in dominant climate modes due to warming, leading to inconsistencies in predicting events like monsoon trends.

    Types of Climate Models to forecast the weather: 

    1. General Circulation Models (GCMs): These models simulate the physics of the climate system by representing the interactions between the atmosphere, oceans, land, and ice. They divide the Earth into a three-dimensional grid and calculate climate variables like temperature and humidity in each grid cell.
    2. Earth System Models (ESMs): An advanced subset of GCMs that includes biogeochemical cycles, allowing them to simulate interactions between climate and ecological processes, such as carbon and nitrogen cycles.
    3. Regional Climate Models (RCMs): These focus on smaller geographic areas to provide more detailed climate projections by using outputs from GCMs as inputs for localized simulations.
    4. Integrated Assessment Models (IAMs): These combine climate science with socioeconomic factors to analyze how human activities influence climate change and to project future emissions scenarios.

    Challenges in Forecasting Extreme Weather:

    • Inconsistent Predictions: Predictions for extreme weather events in 2023, such as the monsoon and hurricane seasons, were less accurate, revealing the limitations of current models and observational networks.
    • Unforeseen Factors: Unanticipated contributions, like the impact of the Hunga Tonga volcano or wildfire-induced CO2 emissions, exacerbated warming in ways models failed to predict, illustrating the unpredictability of new factors.
    • Censorship Concerns: The rapid response required from social media platforms to act on content flagged as misleading within 36 hours created concerns about censorship and freedom of expression.

    Future of Weather Prediction Models:

    • Need for Model Improvements: There is ongoing work to refine models and incorporate the latest technologies, including AI and machine learning, to improve weather prediction accuracy at hyperlocal scales.
    • Natural Modes and Uncertainty: The predictability of natural modes (El Niño, La Niña, IOD) may decrease with relentless warming, making future climate forecasts increasingly uncertain.
    • Short-Term Focus: A shift toward short-term predictions (up to a decade or two) may offer more reliable projections due to the inherent difficulty in predicting long-term scenarios under continuous global warming.

    Way forward: 

    • Enhanced Climate Models: Invest in improving climate models with cutting-edge technologies like AI, machine learning, and advanced sensors to increase the accuracy of short-term forecasts and better capture the impact of natural variability under warming.
    • Localized Early Warning Systems: Develop robust, hyperlocal early warning systems to better prepare for extreme weather events, focusing on disaster management and reducing vulnerabilities in high-risk communities.

  • [pib] 10 Years of Make in India

    Why in the News?

    It has been 10 years since the announcement of “Make in India” Programme on September 25 in the year 2014.

    About the Make in India Programme:

    Details
    Led by Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce & Industry
    Objective To transform India into a global manufacturing and investment hub
    Key Focus Areas Attract foreign investment, promote industrialization, export-led growth
    Make in India 2.0 Sectors Covers 27 sectors, including strategic manufacturing and services
    GDP Target (Manufacturing) Increase manufacturing share in GDP from 16% to 25% by 2022
    Job Creation Target 10 crore additional jobs by 2022
    Manufacturing Growth Target 12-14% annual growth in the manufacturing sector
    Four Pillars
    • Focus on Ease of Doing Business, de-licensing, and de-regulation of industries
    • Develop industrial corridors, strengthen existing infrastructure, fast-track registration
    • 27 sectors including manufacturing, infrastructure, and services
    • Government as a facilitator, partnering with industries for economic development

    Success of the Project

    • India is now the second-largest mobile phone producer globally.
    • The PLI Schemes have attracted ₹1.97 lakh crore in investment across 14 key sectors, generating 8 lakh jobs.
    • The PM GatiShakti initiative has improved logistics and transport connectivity, while India received $667.41 billion in FDI from 2014-2024.
    • Indigenous projects like INS Vikrant and Vande Bharat Trains have showcased India’s growth in manufacturing.
    • India improved its Ease of Doing Business ranking, moving from 142nd to 63rd.
    • Limitations:
      • The share of manufacturing in GDP has remained flat at 17.3% in 2023-24, the same level as in 2013-14, despite rising briefly to 18.5% in 2021-22.
      • Employment has declined, with manufacturing’s share in total employment falling from 11.6% in 2013-14 to 10.6% in 2022-23.
      • India’s share in global exports grew from 1% in 2005-06 to 1.6% by 2015-16, but only increased marginally to 1.8% by 2022-23.
      • Additionally, imports as a share of GDP have risen back to 25% in 2023-24, similar to 27% in 2013-14, after a dip to 21.2% in 2020-21 during the pandemic.

    PYQ:

    [2017] “Industrial growth rate has lagged behind in the overall growth of Gross-Domestic-Product (GDP) in the post-reform period.” Give reasons. How far are the recent changes in Industrial-Policy capable of increasing the industrial growth rate?

  • What are retractions and why do they matter?

    Why in the News?

    The ‘Retraction Watch’ database reports an Indian scientist in Lucknow with 45 retractions, while a Kolkata researcher, who published 300 papers in a year, had six papers retracted.

    What is retraction?

    • A retraction is when a scientific journal officially takes back a research paper because it contains serious mistakes or was found to be dishonest (like using fake data).
    • It’s like saying, “This paper shouldn’t be trusted,” to make sure other scientists don’t rely on wrong information.

    What is retraction index?

    • The retraction index is a way to measure how often papers are retracted in a particular journal.
    • It helps to see the rate of retractions compared to the total number of papers published by the journal.

    How It’s Calculated:

    • It is calculated by multiplying the number of retractions by 1,000 and dividing it by the total number of papers published in that journal during a specific time period.

    What are the primary reasons for retraction?

    • Plagiarism: Copying or presenting someone else’s work without proper attribution.
    • Fabrication/Falsification: Deliberate manipulation of data, experiments, or results to present false findings.
    • Image Manipulation: Altering figures or graphical representations, especially in fields like biology and medicine.
    • Paper Mills: Fake or low-quality papers produced by organizations and sold to researchers to inflate publication counts.
    • Ethical Violations: Including authorship disputes, undisclosed conflicts of interest, and failure to obtain proper consent for studies.
    • Errors in Data: Honest mistakes in data collection, interpretation, or analysis that render the findings invalid.

    How do retractions affect the credibility of scientific research?

    • Erosion of Trust: Scientific integrity relies on trust; retracted papers can cause scientists to lose confidence in published research.
    • Hindrance to Scientific Progress: Retractions delay progress, as future research may be based on faulty or retracted studies.
    • Impact on the Reputation of Researchers and Institutions: Scientists and institutions involved in retractions often face damage to their credibility and career prospects.
    • High-Impact Journals at Greater Risk: More retractions occur in high-impact journals, suggesting a vulnerability due to the pressure to publish groundbreaking work quickly.
    • Harm to Public Perception: High-profile retractions, especially in fields like medicine, can damage public trust in science and scientific institutions.

    What is the process of retracting a paper?

    • Detection: Retractions are often initiated when errors or misconduct are identified through peer reviews, investigations, or by other researchers who question the validity of the work.
    • Investigation: The journal and, in some cases, the author’s institution will conduct an inquiry to determine whether the issues warrant retraction.
    • Notification: Once a decision is made, the journal issues a notice of retraction. This document typically explains why the paper is being retracted (e.g., misconduct or error).
    • Publication of Retraction Notice: The retraction notice is published in the journal, often linked to the original paper. The original article is marked as retracted but remains in the journal archives for transparency.
    • Database Update: Retractions are indexed in databases like PubMed, Retraction Watch, and others, so researchers are informed of flawed studies.

    Way forward: 

    • Strengthen Peer Review and Use AI Tools: Implement advanced AI tools to detect plagiarism, data manipulation, and image alteration during the peer review process to prevent flawed papers from being published.
    • Shift Focus from Quantity to Quality: Encourage institutions to prioritize the quality of research over the sheer number of publications to reduce the pressure on researchers and discourage reliance on paper mills.

  • Navigating cross-border insolvency

    Why in the News?

    It is essential to incorporate the significance of insolvency laws into global trade discussions through both multilateral and bilateral channels.

    What are the key challenges in managing cross-border insolvency cases?

    • Jurisdictional Conflicts: Difficulty in determining which country’s courts have jurisdiction over insolvency proceedings, especially when a company has assets and creditors in multiple countries.
    • Recognition of Foreign Proceedings: Some countries may not recognize foreign insolvency proceedings, leading to inconsistent outcomes.
    • Coordination Issues: Lack of cooperation between courts and administrators in different countries can complicate the resolution of cross-border insolvency cases.
    • Legal and Cultural Differences: Variations in legal systems, insolvency laws, and business practices across countries make harmonization challenging.
    • Enforcement of Judgments: Difficulty in enforcing insolvency-related judgments or agreements across different jurisdictions.

    How does the Insolvency and Bankruptcy Code (IBC) address cross-border insolvency in India?

    • Limited Provisions: The IBC, 2016, has provisions for handling cross-border insolvency on a case-by-case basis through bilateral agreements, but it lacks a comprehensive framework.
    • Bilateral Arrangements: India’s approach currently relies on ad hoc bilateral agreements to manage cross-border insolvency cases, making the process fragmented and less efficient.
    • No Adoption of the UNCITRAL Model Law: Despite several recommendations by committees, India has yet to adopt the UNCITRAL Model Law on Cross-Border Insolvency, which would provide a more standardized and efficient resolution mechanism.

    What international frameworks exist to facilitate cross-border insolvency resolutions?

    • UNCITRAL Model Law on Cross-Border Insolvency (1997): A widely recognized framework designed to facilitate cooperation between courts and administrators in different countries.
      • It operates on four pillars: access, recognition, cooperation, and coordination. It has been adopted by over 60 countries.
    • EU Insolvency Regulation: Provides a framework for handling insolvency within EU member states, facilitating the recognition of insolvency proceedings across borders within the EU.
    • NAFTA/US-Mexico-Canada Agreement (USMCA): Includes provisions for resolving insolvencies with cross-border implications between member countries.
    • Bilateral and Multilateral Trade Agreements: Some international agreements include limited provisions on cross-border insolvency, though most focus on general trade and dispute resolution, leaving a gap in addressing insolvency directly.

    Way forward: 

    • Adopt the UNCITRAL Model Law: India should expedite the adoption of the UNCITRAL Model Law on Cross-Border Insolvency to establish a standardized framework, improving cooperation, recognition, and legal certainty in international insolvency cases.
    • Integrate Cross-Border Insolvency in Trade Agreements: India should incorporate cross-border insolvency provisions in Free Trade Agreements (FTAs) and Comprehensive Economic Partnership Agreements (CEPAs) to ensure seamless insolvency resolution in international trade.

  • Findings based on China’s Chang’e-5 Mission

    Why in the News?

    • Scientists long believed that volcanic activity on the moon ceased about a billion years ago.
      • However, a study based on China’s Chang’e-5 mission samples has questioned this belief with evidence suggesting the moon had active volcanoes as recently as 120 million years ago.

    Chang’e-5 Mission: Overview and Recent Findings

    • Chang’e-5 is a mission launched in November 2020 as part of the Chang’e lunar exploration program.
    • It was designed to:
      • Collect samples from the moon’s surface and bring them back to Earth for analysis.
      • Study the geology and mineral composition of the moon.
    • It successfully landed on the “Mons Rumker region”, a volcanic complex in the Oceanus Procellarum (the ‘Ocean of Storms’) area on the moon’s near side, and returned about 1.7 kg of lunar material to Earth in December 2020.

    Recent Findings Based on Chang’e-5 Mission

    • Recent studies of samples have revealed evidence of volcanic activity on the moon as recently as 116-135 million years ago.
      • It challenges the previous belief that the moon’s volcanic activity ceased about a billion years ago.
    • The analysis of lunar glass beads collected by Chang’e-5 has provided insights into both volcanic eruptions and asteroid impacts that shaped the moon’s surface.

    What are the Beads on the Moon?

    • Lunar glass beads are small, spherical or egg-shaped glass particles found on the moon’s surface.
    • These beads are formed in two main ways:
      • Volcanic Activity: During volcanic eruptions, molten lava fragments are thrown into the air, where they cool rapidly and form glass beads.
      • Impact Events: When asteroids or meteorites hit the moon’s surface, the intense pressure and heat melt the surface material. The molten material cools quickly, forming glass beads as it lands back on the surface.
    • These beads are important because they:
      • Provide clues about the moon’s geological history.
      • Help scientists determine the age of volcanic eruptions.
      • Offer insights into the formation of the moon’s surface and its volcanic and impact events.

    Key characteristics of Lunar Glass Beads

    • Composition: These beads are primarily made of silicon, magnesium, and iron, with trace amounts of other elements such as potassium, titanium, and uranium.
    • Volcanic vs. Impact Beads: Volcanic glass beads tend to be more uniform, while impact beads may show fractures or deformations caused by high-energy impacts. Volcanic beads often contain more volatile elements like sulphur, which are released during eruptions.

    PYQ:

    [2012] What do you understand by the term Aitken basin?

    (a) It is a desert in the southern Chile which is known to be the only location on earth where no rainfall takes place.

    (b) It is an impact crater on the far side of the Moon.

    (c) It is a Pacific coast basin, which is known to house large amounts of oil and gas.

    (d) It is a deep hyper saline anoxic basin where no aquatic animals are found.

  • AH-64E Apache Helicopters

    AH-64E Apache Helicopters

    Why in the News?

    The Indian Army is set to receive its first batch of three AH-64E Apache attack helicopters from Boeing in December.

    About AH-64E Apache Attack Helicopters:

    Details
    Name and Origin AH-64E Apache (Apache Guardian) is a highly advanced multi-role combat helicopter and lies in a heavy category.

    Manufactured by Boeing, originating from the US.
    India’s Acquisition In February 2020, India signed a deal for six AH-64E helicopters, with an additional six contracted later.
    Countries Operating Operated by India, Egypt, Israel, Japan, South Korea, UAE, UK, and others.
    Indigenous Production Tata Boeing Aerospace Limited (TBAL), a joint venture, produces fuselages in Hyderabad, set to become the sole global producer, sourcing 90% of parts from India.
    Combat Features Features open architecture for advanced systems, enhanced thrust and lift, digital interoperability, improved survivability, and advanced infrared and night vision capabilities.

    Deployment Plans for Apache 

    • The Apaches are primarily suited for countering armour and will be deployed in desert regions.
    • However, due to their operational limitations at high altitudes, they won’t be used in regions like Ladakh.
    • Instead, the indigenous Light Combat Helicopter (LCH), manufactured by Hindustan Aeronautics Ltd., will be deployed in Ladakh by 2024-25.
      • The LCH is designed specifically for high-altitude conditions.

    PYQ:

    [2016] Which one of the following is the best description of ‘INS Astradharini’, that was in the news recently?

    (a) Amphibious warfare ship

    (b) Nuclear-powered submarine

    (c) Torpedo launch and recovery vessel

    (d) Nuclear-powered aircraft carrier

  • Spices Board targets exports of $25 billion by 2047

    Why in the News?

    • The Spices Board of India aims to achieve $25 billion in annual exports of spices and spice-based products by 2047, a significant increase from the current $4.4 billion.
      • Current consumption is 10 million tonnes, with 1.42 million tonnes exported annually. By 2047, the export target is 2.7 million tonnes.

    About Spices Board of India

    • The merger of the erstwhile Cardamom Board and Spices Export Promotion Council on 26th February 1987, under the Spices Board Act 1986 led to the formation of the Spice Board of India.
    • The Board functions as an International link between the Indian exporters and the importers abroad with a nodal Ministry of Commerce & Industry.
    • It is headed by a Chairman, a rank equivalent to Joint Secretary to the GoI.
    • Headquartered in Kochi, it has regional laboratories in Mumbai, Chennai, Delhi, Tuticorin, Kandla and Guntur.
    • Main Functions:
      • It promotes organic production, processing, and certification of spices.
      • Responsible for the overall development of Cardamom.
      • It focuses on post-harvest improvement programs to improve the quality of the 52 scheduled spices for export.
      • These programs are included under the head ‘Export Oriented Production’.

    Present Scenario of Spices  

    • Production:
      • Major producing states: Madhya Pradesh, Rajasthan, Gujarat, Andhra Pradesh, Telangana, Karnataka, Maharashtra, Assam, Orissa, Uttar Pradesh, West Bengal, Tamil Nadu, and Kerala.
      • During 2022-23, the export of spices from India stood at US$ 3.73 billion, up from US$ 3.46 billion in 2021-22.
      • India produces about 75 of the 109 varieties listed by the International Organization for Standardization (ISO).
    • Major Produced and Exported Spices by India:
      • Pepper, cardamom, chili, ginger, turmeric, coriander, cumin, celery, fennel, fenugreek, garlic, nutmeg & mace, curry powder, spice oils, and oleoresins.
      • Out of these spices, chili, cumin, turmeric, ginger, and coriander make up about 76% of the total production.
      • Chilli is the leading export earner, generating $1.1 billion annually.
      • Ginger exports have a compound annual growth rate (CAGR) of 27%.
    • Export:
      • In 2023-24, India’s spice exports totalled $4.25 billion, accounting for a 12% share of the global spice exports (till February 2024 data).
      • India exported spices and spice products to 159 destinations worldwide as of 2023-24. The top destinations were China, the USA, Bangladesh, the UAE, Thailand, Malaysia, Indonesia, the UK, and Sri Lanka. These countries accounted for more than 70% of total exports.

     

    PYQ:

    [2019] Among the agricultural commodities imported by India, which one of the following accounts for the highest imports in terms of value in the last five years?

    (a) Spices

    (b) Fresh fruits

    (c) Pulses

    (d) Vegetable oils

  • NBFC sector resilient under scale-based regulations framework: RBI bulletin

    Why in the News?

    During the transition to the Scale-Based Regulation (SBR) framework, the NBFC sector experienced double-digit credit growth, maintained adequate capital levels, and saw a reduction in delinquency ratios.

    What is Scale-Based Regulation (SBR)?

    • The SBR framework was first outlined in October 2021 and became effective on October 1, 2022.
    • It aims to categorize NBFCs based on their size, activities, and perceived riskiness rather than merely distinguishing between systemically important and non-systemically important entities.

    What are the key points presented by RBI on the resilience of the NBFC sector?

    • Improvement in Asset Quality: Since the introduction of the Scale-Based Regulation (SBR) framework in October 2022, the asset quality of NBFCs has improved, with lower gross non-performing asset (GNPA) ratios.
      • By December 2023, GNPA ratios had decreased to 2.4% for government-owned NBFCs and 6.3% for non-government NBFCs, reflecting enhanced risk management.
    • Double-Digit Credit Growth: The NBFC sector maintained strong credit growth throughout 2023, driven by a diversified funding base, including retail credit (gold loans, vehicle loans, and housing loans) and expanding into industrial and service sectors.
    • Improved Profitability: The sector witnessed a rise in profitability, as evidenced by better returns on assets (RoA) and equity (RoE).
    • Net NPA (NNPA) Performance: Upper layer NBFCs had lower GNPA ratios than middle layer NBFCs, but the latter maintained sufficient provisions for riskier portfolios, ensuring that their NNPA ratios were also controlled.
    • Compliance with SBR: Major NBFCs in the “Upper Layer” identified by the RBI under the SBR framework, such as LIC Housing Finance, Bajaj Finance, and L&T Finance, have complied or initiated steps to comply with listing requirements.

    Regulatory measures  taken up by the NBFC sector 

    • Scale-Based Regulation (SBR) Framework: Introduced in October 2022, the SBR framework categorizes NBFCs into different layers based on their size, systemic importance, and risk profile. For instance, strengthen asset quality, capital requirements, and risk management.
    • Prompt Corrective Action (PCA) Norms: Effective from October 2024, PCA norms will apply to government-owned NBFCs. These measures aim to enhance financial discipline, focusing on capital adequacy and asset quality.
    • Diversification of Funding Sources: Due to rising risk weights on bank lending, NBFCs have diversified their funding base by reducing dependence on bank borrowings and expanding into secured retail credit.
    • Listing Compliance: Many NBFCs in the upper layer have complied or are in the process of complying with listing requirements as part of regulatory mandates.

    What are the emerging risks that NBFCs need to cater? (Way forward) 

    • Cybersecurity Risks: With the increasing use of digital platforms, NBFCs need to enhance cybersecurity measures to safeguard against evolving cyber threats.
    • Climate Risk: The financial impact of climate change poses a new risk. NBFCs must integrate climate-related risks into their risk management frameworks to mitigate potential disruptions.
    • Financial Assurance Functions: The RBI emphasizes that assurance functions like risk management, compliance, and internal audit are critical in maintaining resilience in the face of rapid changes in the financial landscape.
    • Evolving Regulatory Environment: As the financial sector continues to evolve, NBFCs must stay ahead of regulatory changes and ensure that their risk management practices are aligned with emerging threats and new regulations.

  • How Starlink satellites are ‘blinding’ astronomers?

    Why in the News?

    Starlink satellites, operated by Elon Musk’s SpaceX, are causing issues for astronomers by disrupting both optical and radio astronomy due to unintended electromagnetic radiation (UEMR).

    What is a Starlink Satellite?

    • Starlink satellites are part of a network created by Elon Musk’s SpaceX to provide high-speed internet to remote areas around the world.
    • The network, known as a satellite constellation, currently includes more than 6,300 satellites orbiting Earth at around 550 km altitude.
    • These satellites aim to offer internet connectivity to places that would otherwise lack access, especially in rural or underserved regions.

    Why Radio Astronomy matters?

    • Radio astronomy is a branch of astronomy that studies celestial objects using radio frequencies instead of visible light.
    • Radio telescopes detect radio waves, which are longer than light waves, emitted by objects in space such as stars, galaxies, and even black holes.
    • Radio astronomy is important because it helps scientists study the universe beyond what can be seen with optical telescopes.
    • Radio noise from sources like satellites can interfere with these observations, making it difficult for astronomers to collect data, similar to how bright lights can obscure faint stars.

    What Starlink does to Space Communications?

    • Starlink satellites are designed to improve global internet access, especially in hard-to-reach places, by transmitting signals from space.
    • However, these satellites also emit unintended electromagnetic radiation (UEMR), which causes radio noise that disrupts radio astronomy observations.
    • The situation may worsen as more satellites are launched — some estimates suggest 100,000 satellites could be orbiting Earth by 2030.
    • There are currently no regulations controlling how much radio pollution these satellites can emit, making it harder for astronomers to mitigate the impact on their work.

    PYQ:

    [2011] A layer in the Earth s atmosphere called Ionosphere facilitates radio communication. Why?

    1. The presence of ozone causes the reflection of radio waves to Earth.

    2. Radio waves have a very long wavelength.

    Which of the statements given above is/are correct?

    (a) 1 Only

    (b) 2 only

    (c) Both 1 and 2

    (d) Neither 1 nor 2