In News:

India's first home-grown electric propulsion satellite to be launched in Dec.

Key Highlights:

• Objective of TDS-1:

• Purpose: To demonstrate electric propulsion technology for satellite steering, using solar-powered ionized gas.
• Goal: Reduce reliance on chemical fuel, making satellites lighter and more efficient.

• Key Benefits of Electric Propulsion:

• Weight Reduction: The technology can significantly cut down satellite mass. For example, a satellite weighing 4 tonnes could be reduced to around 2 tonnes.
• Fuel Efficiency: By using electric propulsion, the need for chemical fuel is minimized, allowing for a more efficient journey to geostationary orbit.

• Technology Details:

• Fuel Used: Gases like Argon are ionized using solar power to create propulsion.
• Process: The ionized gas is expelled at high speeds to generate thrust, pushing the satellite towards its desired orbit.

• Historical Context:

• The technology was first used in GSAT-9 (South Asia Satellite) in 2017 but with imported Russian components.
• TDS-1 marks the first fully indigenous development of electric propulsion technology by ISRO, highlighting India’s increasing space autonomy.

• Significance for India’s Space Program:

• Self-Reliance: TDS-1 reflects ISRO’s growing capacity to develop advanced space technologies domestically.
• Future Prospects: This breakthrough is expected to lead to more efficient satellite designs, enhancing India’s competitiveness in the global space industry.

In News:

The United Nations Environment Programme (UNEP) recently published the Emissions Gap Report 2024, in anticipation of the COP29 meeting of the UNFCCC to be held in Baku, Azerbaijan.

Key Highlights:

• Current Trajectory of Global Warming:
  • If countries continue with current environmental policies, global temperatures are expected to rise by 3.1°C above pre-industrial levels.
  • This is significantly higher than the Paris Agreement target of limiting global warming to well below 2°C, with an effort to cap it at 1.5°C.
• Paris Agreement at Risk:
  • Even if all Nationally Determined Contributions (NDCs) are fully implemented (including both unconditional and conditional emissions reduction targets), the world would still experience 2.6°C of warming by 2030.
  • This presents a major challenge to achieving the Paris Agreement’s climate goals.
• Urgent Need for Action:
  • To limit global warming to 1.5°C, greenhouse gas emissions must peak before 2025 and decline by 43% by 2030.
  • The report highlights the emission gap between current pledges and what is required to meet the 1.5°C goal.
• Record High Emissions:
  • Global greenhouse gas emissions hit a record 57.1 gigatons of CO? equivalent in 2023.
  • This represents an increase of 1.3% compared to 2022, continuing the upward trend from the previous decade.
• India’s Emissions:
  • India’s greenhouse gas emissions grew by 6.1% between 2022 and 2023.
  • Per capita emissions in India were 2.9 tCO?e in 2022, significantly lower than China (11 tCO?e) and the U.S. (18 tCO?e).
• G20 Countries’ Contribution:
  • G20 countries, excluding the African Union, contributed 77% of global emissions in 2023.
  • The six largest emitters (including China, U.S., and India) were responsible for 63% of global emissions.
  • This shows a significant imbalance in emissions, with developed countries having much higher per capita emissions compared to developing nations like India and Africa.
• Necessary Emissions Cuts:
  • To keep the 1.5°C target within reach, global emissions need to be cut by at least 7.5% annually until 2035.
  • Cost of bridging the emissions gap: Achieving net-zero by 2050 will require USD 900 billion to USD 2.1 trillion annually, approximately 1% of global GDP.
• Emission Reduction Pathways:
  • Renewable Energy: Scaling up solar and wind energy technologies could contribute up to 27% of the required emissions reductions by 2030.
  • Forest Conservation: Protecting and restoring forests could provide 20% of the required emissions reductions by 2030.
  • Other crucial measures include improving energy efficiency, transitioning to electric vehicles, and focusing on fuel switching in key sectors like transport, industry, and buildings.
• Disparities in Emissions:
  • Despite changes over the past two decades, large disparities remain between emissions across regions.
  • Developed countries have three times higher per capita emissions compared to the global average, while India, the African Union, and least developed countries continue to have much lower emissions.
• Call to Action:
  • UNEP Executive Director Inger Andersen urged countries to act now, stating: “No more hot air, please.” The urgency is to ramp up climate pledges and ensure stronger actions in the upcoming COP29 talks in Baku, Azerbaijan (November 2024), where nations must work to get on a 1.5°C pathway.

United Nations Environment Programme (UNEP)

• Established: 1972, following the United Nations Conference on the Human Environment in Stockholm.
• Headquarters: Nairobi, Kenya.
• Governing Body: The United Nations Environment Assembly (UNEA), which is the world’s highest-level decision-making body on environmental matters, with 193 Member States.
• Programs & Initiatives: UNEP leads global efforts on climate action, ecosystem restoration, clean seas, and supports the Sustainable Development Goals (SDGs).
• Reports: UNEP publishes crucial assessments like the Emissions Gap Report, Global Environment Outlook, and Adaptation Gap Report, influencing global environmental policies.

In News:

Hong Kong discovers dinosaur fossils for the first time

Key Details:

• • Significance: This marks the first-ever discovery of dinosaur fossils in Hong Kong.
• Time Period:The fossils date back to the Cretaceous Period, approximately 145 million to 66 million years ago.
• Fossil Details:The fossils belong to a large dinosaur, but further studies are required to determine the exact species.Initial analysis suggests the dinosaur may have been buried by sand and gravel after death, later being washed to the surface by a flood before being buried again.
• Site and Protection:Port Island, part of a geopark, is closed to the public to facilitate ongoing fossil investigations and excavation work.
• Geological and Archaeological Importance:The discovery underscores the significance of Hong Kong's geoparks and its role in preserving and showcasing natural history.This finding contributes to global understanding of prehistoric life, especially in the Cretaceous period.

In News:

India with an abysmal score of 45.5 (out of 100) has been ranked 176th in the Global Nature Conservation Index, 2024.

India's Ranking and Score:

• Rank: India ranks 176th out of 180 countries.
• Score: 45.5 out of 100.
• Context: India is listed among the five "worst performers," alongside Kiribati (180), Turkey (179), Iraq (178), and Micronesia (177).

Key Factors Affecting India’s Ranking:

• Inefficient Land Management: The main contributing factor to India's low ranking.
• Threats to Biodiversity: Rising threats due to habitat loss, deforestation, climate change, and pollution.
• Deforestation: Between 2001 and 2019, India lost 23,300 sq. km of tree cover, exacerbating biodiversity loss.

Focus Areas of the Nature Conservation Index (NCI):

• Land Management: Inefficient land use practices, with 53% of land converted for urban, industrial, and agricultural purposes.
• Biodiversity Threats: Habitat loss, fragmentation, and declining populations of marine and terrestrial species.
• Governance and Capacity: Challenges in enforcement of laws and governance structures that support conservation.
• Future Trends: India faces both opportunities and challenges, given its high population density and rapid development.

Key Findings:                                    

• Land Conversion and Urbanization: High rates of land conversion (53%) for development purposes, contributing to habitat loss.
• Soil Pollution: Issues with pesticide use and soil pollution (low nitrogen index of 0.77), affecting soil health.
• Marine Conservation: Only 0.2% of national waterways and none within the Exclusive Economic Zone (EEZ) are protected.
• Deforestation Impact: Loss of 23,300 sq. km of forest between 2001-2019.
• Biodiversity Decline: Despite 40% of marine species and 65% of terrestrial species in protected areas, biodiversity continues to decline—67.5% of marine species and 46.9% of terrestrial species face population decreases.

Marine and Terrestrial Conservation:

• Marine Areas: Need for greater investment in marine conservation, as India's marine protected areas (MPAs) are limited.
• Protected Areas: While 7.5% of India’s terrestrial area is protected, significant threats like climate change and habitat fragmentation persist.

Biodiversity and Climate Change:

• Climate Change Risks: Impacts on vulnerable ecosystems, including coral reefs and alpine regions, further threaten biodiversity.
• Population Growth: India’s rapidly growing population (one of the highest in the world) places constant pressure on natural resources and ecosystems.

Illegal Wildlife Trade:

• Global Ranking: India is the fourth-largest illegal wildlife trader globally, with an annual trade worth approximately £15 billion.
• Call for Action: Stronger enforcement of wildlife protection laws and international cooperation are crucial to combat illegal wildlife trade.

SDGs and India’s Conservation Challenges:

• SDG 14 (Life Below Water) and SDG 15 (Life on Land): India faces significant challenges in meeting these Sustainable Development Goals, particularly in protecting marine life and terrestrial ecosystems.

Recommendations for Improvement:

• Stronger Political Will: Political commitment is essential for passing laws that promote sustainable development and biodiversity conservation.
• Enforcement and Funding: Increased funding for environmental initiatives and better enforcement of conservation policies are necessary to address the conservation challenges.
• Sustainable Development: Integrating sustainable land use practices and improving governance structures for conservation are key areas for focus.

In News:

The Space Commission also approved a joint moon mission with Japan called the Lunar Polar Exploration Mission. For LUPEX, ISRO is developing a different moon lander than the one it used for Chandrayaan-3

New Space Missions and Developments

• Chandrayaan-4 (Moon Mission):
  • Type: Sample-return mission.
  • Launch: Expected by 2027.
  • Cost: ?2,104 crore.
  • Objective: Sample collection of moon soil and rock to return to Earth.
  • Mission Details: Two LVM-3 launch vehicles will launch components that will dock in Earth orbit before heading to the moon. The samples will be sent back using a bespoke canister.
• Lunar Polar Exploration Mission (LUPEX):
  • Collaboration: Joint mission with Japan.
  • Objective: Exploration of lunar poles with a new lander design, intended for potential crewed missions in future.
• Venus Orbiter Mission:
  • Launch Window: March 2028.
  • Cost: ?1,236 crore.
  • Objective: Study Venus' surface and atmosphere to understand planetary evolution in the Solar System.
• Next Generation Launch Vehicle (NGLV):
  • Development Budget: ?8,240 crore for first three development flights.
  • Objective: A new launcher developed with private sector collaboration for future space missions.

Cabinet Approvals for Space Initiatives

• Human Spaceflight Programme (Gaganyaan):
  • Four new missions under Gaganyaan, including an uncrewed Gaganyaan flight.
  • Focus on developing technologies for India’s first space station, Bharatiya Antariksh Station (BAS), planned by 2028.
• Space-Based Surveillance (SBS) Missions:
  • Phase 3: Approval for building 21 ISRO satellites, with 31 additional satellites by private companies.
  • Total Cost: ?26,968 crore.
• Development of a Third Launch Pad:
  • To support the NGLV and additional space missions at Sriharikota.

Upcoming Satellite Missions

• NISAR (NASA-ISRO Synthetic Aperture Radar):
  • Launch: Early 2025 on a GSAT launch vehicle.
  • Purpose: Earth observation using advanced radar technology.
  • Issue: Protective coating added due to high temperatures during testing.
• Proba-3 (European Space Agency):
  • Launch: November 29, 2024, aboard PSLV-XL.
  • Objective: Study the Sun’s corona using two satellites in formation, mimicking an eclipse to capture unique solar data.

Private Sector Involvement

• Manastu Space & Dhruva Space:
  • Collaboration: Testing green propulsion technology for the LEAP-3 mission.
  • Technology: Hydrogen-peroxide-based green propulsion system.
  • Launch: LEAP-3 mission in 2025.
• Bellatrix Aerospace:
  • Project: Prototype satellite for ultra-low earth orbit at 200 km altitude.
• Ananth Technologies:
  • Achievement: First private company to assemble, integrate, and test Space Docking Experiment (SpaDEx) satellites for ISRO.

Space Science and Research Updates

• Chandrayaan-3:
  • Findings: The crater where Chandrayaan-3 landed is older than the South Pole-Aitken Basin (4.2-4.3 billion years old).
  • Data Source: Optical High-Resolution Camera (Chandrayaan-2) and Pragyaan rover (Chandrayaan-3).
• Astrosat (India’s First Space Observatory):
  • Mission Life: Expected to last two more years (originally planned for 5 years).
  • Significance: Contributed to over 400 published papers based on multi-wavelength space observatory data.