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Distribution: yearly

  • Study revives South Korea Superconductivity claim

    Superconductivity

    Introduction

    What is Superconductivity?

    • Zero Resistance: Superconductivity occurs when a material offers almost zero resistance to the flow of electric current, enabling energy-efficient electrical appliances and lossless power transmission.
    • Magnetic Behavior: Superconductors also display fascinating behavior under magnetic fields, enabling technologies like MRI machines and superfast Maglev trains.

    Exploring the Material LK-99

    • Apatite Structure: The Korean group utilized copper-substituted lead apatite, a phosphate mineral with unique tetrahedral motifs, to create LK-99.
    • Superconducting Behavior: LK-99 displayed essential superconducting properties, with almost zero resistance to current flow and sudden emergence of resistance above a critical current threshold.
    • Magnetic Resilience: LK-99 retained superconductivity even under the presence of a magnetic field until reaching a critical threshold.

    Meissner Effect: Key Indicator of Superconductivity

    • Definition: The Meissner effect is a phenomenon where materials expel magnetic fields from their interior upon becoming superconductors.
    • Observation in Study: The researchers observed this effect in copper-substituted lead apatite, suggesting potential superconductivity.

    Quest for Room-Temperature Superconductors

    • Significance: Discovering a material that is superconducting at room temperature and pressure (RTP) has immense scientific and commercial value.
    • Applications: RTP superconductors could revolutionize power transmission, medical diagnostics, computing, and more, due to their ability to conduct electricity without loss.

    Hype and Controversies in Superconductivity Research

    • Past Controversies: The field has seen several disputes, including claims by Ranga Dias and a South Korean research group, which were later contested.
    • Impact of Hype: The lucrative potential of RTP superconductors has sometimes led to premature claims and controversies in the scientific community.

    New Study: Methodology and Findings

    • Approach: The team synthesized LK-99 samples using advanced techniques and tested for signs of superconductivity beyond specific claims made by previous studies.
    • Direct Current Measurements: They conducted hysteresis experiments, applying and removing a magnetic field to observe the material’s response at various temperatures.

    Understanding Hysteresis in Superconductors

    • Meissner Effect and DC Current: The Meissner effect is observable with direct current, as alternating current would disrupt the phenomenon.
    • Type I and II Superconductors: The study helps distinguish between these types based on how they respond to increasing magnetic field strength.

    Challenges and Limitations of the Study

    • Small Superconducting Portions: The material’s superconducting sections were small, leading to a low critical magnetic field strength.
    • Interference Issues: The presence of cuprous sulphide interfered with molecular structure analysis using X-rays.

    Way Forward: Verifying RTP Superconductivity

    • Potential for RTP Superconductivity: While the study suggests near-RTP superconductivity in LK-99, definitive observation is yet to be made.
    • Need for Further Research: Identifying the material responsible for superconductivity and refining synthesis techniques are crucial next steps.

  • CLPS Initiative: First US Commercial Robotic Moon Mission

    clps

    Introduction

    • A private US company launched a spacecraft carrying NASA instruments, aiming to be the first US spacecraft to land on the Moon in over 50 years.
    • This mission is a key component of NASA’s Commercial Lunar Payload Services, integrating private sector capabilities into the Artemis Program.

    About Commercial Lunar Payload Services (CLPS) Initiative

    • NASA’s collaboration with the private sector under the CLPS initiative involves at least 14 companies contracted to deliver payloads to the Moon.
    • This partnership aims to develop a market and technology ecosystem in the private space industry for lunar exploration.
    • The mission features the Peregrine lander and the Vulcan rocket, both developed by private US space companies.

    Objectives and Payloads

    • NASA’s Five Payloads: The Peregrine lander carries five NASA payloads designed for various exploratory tasks, including water detection.
    • Laser Retroreflector Array: One payload, designed for precision distance measurements, will be permanently deployed on the Moon’s surface.
    • Duration of Activity: Other payloads are expected to remain active for ten days post-landing.

    Historical Context: Return to the Moon

    • Last US Moon Landing: The last US spacecraft landed on the Moon during the Apollo 17 mission in December 1972.
    • Renewed Lunar Interest: The US reignited its lunar exploration efforts in the 1990s and formally committed to return in 2018.
    • Artemis Program Goals: NASA’s Artemis Program aims to establish a permanent base on the Moon, facilitating longer human and robotic stays for extensive exploration and scientific research.

    Back2Basics: NASA’s Artemis Mission

    Details
    Background Named after Apollo’s twin sister in Greek mythology, Artemis, who is also the goddess of the Moon.
    Objective To enable human exploration to the Moon and Mars, with increasingly complex missions.
    Key Milestones Landing humans on the Moon by 2024.

    Landing the first woman and first person of color on the Moon.

    Establishing an Artemis Base Camp on the lunar surface and a Gateway (lunar outpost) in lunar orbit.
    International Collaboration Canadian Space Agency, European Space Agency, and Japan Aerospace Exploration Agency
    Artemis I Mission First integrated flight test of NASA’s Deep Space Exploration Systems

    Uncrewed mission using the Orion spacecraft and Space Launch System (SLS) rocket

    Launch from Kennedy Space Center, Florida, in 2022

    Goals include safe crew module entry, descent, splashdown, and recovery
    Future Missions Artemis II will have a crew onboard to test Orion’s systems

    Plans to use lunar orbit experience for future Mars missions

  • Why is Child Marriage still high in West Bengal?

    child marriage

    Introduction

    • Recent Study Insights: A Lancet study highlights the ongoing challenge of child marriage in India, with significant prevalence in states like West Bengal.
    • Focus on Four States: Bihar, West Bengal, Uttar Pradesh, and Maharashtra are noted for their high rates of child marriages, particularly among girls.

    Key Findings of the Lancet Study

    • Widespread Prevalence: The study reveals that one in five girls in India is married below the legal age, with notable disparities across states.
    • Rising Numbers in West Bengal: West Bengal has seen a significant increase in child marriages, with over 500,000 more girls married as children.

    Impact of Child Marriage

    • Human Rights Violation: Child marriage is recognized as a form of sexual and gender-based violence and a violation of human rights.
    • Health Consequences: The practice has detrimental effects on maternal and child health, as evidenced by incidents like infant deaths in Murshidabad.

    Policy Interventions in West Bengal

    • Kanyashree Prakalpa Scheme: A conditional cash transfer scheme aimed at encouraging education and discouraging child marriage among teenage girls.
    • Rupashree Prakalpa: A cash incentive scheme for the marriage of girls, which sometimes counteracts the objectives of Kanyashree.

    Challenges in Combating Child Marriage

    • Educational Strides vs. Child Marriage: Increased school enrollment of girls in West Bengal has not translated into a reduction in child marriage rates.
    • Literacy and Child Marriage Correlation: High literacy rates in certain districts have not led to a decrease in child marriage, indicating complex underlying factors.
    • Migration and Social Norms: Migration patterns and social norms contribute to the persistence of child marriage, with families marrying off daughters before migrating for work.

    Implementation of Laws and Regulations

    • Inadequate Law Enforcement: Despite existing laws like The Prohibition of Child Marriage Act (PCMA), 2006, enforcement remains weak in West Bengal compared to other states.
    • Proposed Amendments: Efforts to raise the legal age of marriage for women to 21 years are underway, with the bill referred to a Parliamentary Standing Committee.

    Looking Ahead: Strategies for Change

    • Need for Comprehensive Approach: Addressing child marriage requires a multi-faceted approach involving panchayats, schools, local communities, and political will.
    • District Action Plans: The West Bengal government’s call for district action plans is a step forward, but effective implementation and social campaigns are crucial.
    • Enforcing Laws and Raising Awareness: Strengthening law enforcement and raising public awareness are key to reducing child marriage rates in West Bengal and across India.

    Conclusion

    • Persistent Challenge: Despite policy efforts, child marriage remains a significant issue in India, particularly in states like West Bengal.
    • Balancing Incentives and Enforcement: While schemes like Kanyashree and Rupashree aim to address the issue, balancing incentives with strict law enforcement is essential.
    • Collaborative Efforts for Change: A collaborative effort involving all stakeholders, along with a strong political commitment, is necessary to effectively combat child marriage and protect the rights of young girls.

  • Red Sea Crisis: Impact on Global and Indian Trade

    red sea

    Introduction

    • Houthi Militia Attacks: Since November, attacks by the Houthi militia of Yemen have rendered the Red Sea, a crucial marine route via the Suez Canal, unsafe for cargo ships.
    • Alternative Route: This has led to a significant rerouting of cargo, with ships now taking the longer Cape of Good Hope route, affecting global trade and increasing costs.

    About the Red Sea

    Details
    Location Between Africa (Egypt, Sudan, Eritrea, Djibouti) and Asia (Saudi Arabia, Yemen).
    Connection Connects to the Indian Ocean via the Bab el Mandeb strait and the Gulf of Aden.
    Length Approximately 2,250 km long.
    Width Varies from 355 km at its widest point to 20 km at the Strait of Tiran.
    Maximum Depth About 7,254 feet (2,211 m) in the central median trench.
    Unique Features – One of the world’s saltiest bodies of water.

    – Notable for its rich ecosystem, including extensive coral reefs.
    Climate Generally hot and arid; surrounding desert and high evaporation rates contribute to its high salinity.
    Economic Importance Major shipping route; oil-rich region with significant petroleum deposits on the sea’s borders.

    Impact on Indian Trade

    red sea

    • Shift in Shipping Routes: Following the attacks, about 90% of India’s western hemisphere cargo is being rerouted through the Cape of Good Hope.
    • Contractual Implications: The impact varies based on the type of buyer-seller contract, with some consignments being held up due to increased freight costs.
    • Freight Cost Surge: Freight costs have risen significantly, by up to six-fold in some cases, affecting all consignments, especially low-value, high-volume cargo and perishables.

    Implications for India’s Imports

    • Increased Import Costs: The longer transit time and crisis could lead to costlier imports and necessitate better inventory management.
    • Effect on Fuel Prices: The crisis might impact plans to reduce fuel prices in India, given the country’s high dependence on crude oil and petroleum product imports.
    • Tanker Market Dynamics: Despite increased freight rates for affected routes, there hasn’t been a widespread rerouting of tankers.

    Global and Indian Response

    • UN and US Stance: The UN condemned the Houthi attacks, and the US is seeking more support for ‘Operation Prosperity Guardian’ to ensure safe sea lanes.
    • India’s Monitoring: The Indian government is closely observing the situation, with the Commerce Secretary discussing potential impacts with officials and trade bodies.

    Sector-Specific Impact

    • Commodities Most Affected: Sectors like chemicals, plastics, and petrochemicals are severely impacted due to their inability to absorb freight hikes.
    • Alternatives for High-Value Goods: For high-value, low-volume commodities, airlifting is an option, but most affected goods are large in volume.

    Conclusion

    • Continued Uncertainty: The situation in the Red Sea presents ongoing challenges for global and Indian trade, with no immediate resolution in sight.
    • Adaptation and Monitoring: Businesses and governments are adapting to these changes, with a focus on monitoring developments and mitigating impacts.
    • Long-Term Implications: The crisis underscores the vulnerability of global trade routes to geopolitical conflicts and the need for diversified shipping strategies.

  • From Red Ant Chutney to Black Rice: 7 Odisha products have bagged GI tags

    red ant

    Introduction

    • Seven products from Odisha, including traditional foods and handicrafts, have received the Geographical Indication (GI) tag.

    About GI Tag

    • A GI is a sign used on products that have a specific geographical origin and possess qualities or a reputation that are due to that origin.
    • Nodal Agency: Department for Promotion of Industry and Internal Trade (DPIIT), Ministry of Commerce and Industry
    • India, as a member of the World Trade Organization (WTO), enacted the Geographical Indications of Goods (Registration and Protection) Act, 1999 w.e.f. September 2003.
    • GIs have been defined under Article 22 (1) of the WTO Agreement on Trade-Related Aspects of Intellectual Property Rights (TRIPS) Agreement.
    • The tag stands valid for 10 years.

    Odisha’s GI Tagged Products

    [1] Kapdaganda Shawl

    • Cultural Emblem: Woven by the Dongria Kondh tribe, this shawl is a symbol of heritage and affection, embroidered with significant colors representing nature and emotions.
    • Symbol of Commitment: Often presented during courtship, it signifies formal commitment and is a testament to the tribe’s rich textile legacy.

    [2] Lanjia Saura Painting (Idital)

    • Tribal Artistry: Belonging to the Lanjia Saura community, these murals painted on mud walls are not just art but a spiritual expression of gratitude and well-being.
    • Diverse Representations: With 62 types for various occasions, these paintings reflect the community’s deep connection with nature and their ancestors.

    [3] Koraput Kala Jeera Rice

    • Aromatic Heritage: Known as the ‘Prince of Rice’, this black-coloured variety is celebrated for its taste and nutritional benefits, preserved by tribal farmers for centuries.
    • Health and Tradition: Beyond its culinary appeal, the rice is intertwined with tales of physical, mental, and spiritual well-being.

    [4] Similipal Kai Chutney

    • Forest Delicacy: Made from red weaver ants found in the Similipal forests, this chutney is a traditional tribal delicacy packed with nutritional and medicinal value.
    • Sustainable Livelihood: The preparation and sale of this chutney provide a source of income for the local tribes, reflecting a harmonious relationship with nature.

    [5] Nayagarh Kanteimundi Brinjal

    • Distinctive Flavour: Known for its prickly thorns and unique taste, this brinjal variety is a culinary favorite, cultivated extensively in Nayagarh district.
    • Agricultural Pride: With a history of cultivation dating back nearly a century, this brinjal represents the agricultural ingenuity and tradition of the region.

    [6] Odisha Khajuri Guda

    • Natural Sweetener: Extracted from date palm trees, this jaggery is an organic delight, known for its dark brown color and unique taste.
    • Cultural Sweetness: Traditionally prepared in a trapezoidal form, it’s not just a sweetener but a part of the cultural fabric of Odisha.

    [7] Dhenkanal Magji

    • Cheese-Based Sweet: Originating from buffalo milk cheese, this sweet is known for its distinct characteristics and nutritional value.
    • Legacy of Livelihood: Reflecting the region’s history of buffalo rearing and dairy production, this sweet contributes to the livelihood of thousands.

  • First Advance Estimates of India’s GDP out

    advance estimate

    Introduction

    • Growth Projection: India’s GDP is projected to grow by 7.3% in the financial year 2023-24, as per the First Advance Estimates (FAEs) released by the government.
    • Comparison with Previous Year: This rate is slightly higher than the 7.2% growth recorded in 2022-23.

    What is Gross Domestic Product (GDP)?

    • Definition: GDP quantifies the total monetary value of all goods and services produced within a country’s borders in a specific time frame, typically annually.
    • Difference from GNP: GDP is distinct from Gross National Product (GNP), which measures the value of goods and services produced by a country’s nationals, regardless of the production location.

    First Advance Estimates of GDP

    • Introduction and Timing: First introduced in the financial year 2016-17, the First Advance Estimates (FAE) are released at the beginning of January.
    • Nature of Estimates: They represent the initial official projections of GDP growth for the financial year, published before the year concludes.
    • Data Exclusion: Notably, the FAE do not include formal GDP data for the third quarter (October to December), which is released with the Second Advance Estimates (SAE) at the end of February.

    Significance of FAE

    • Election Year Context: With Lok Sabha elections due in April-May, the FAEs gain additional significance, although a full-fledged Union Budget will not be presented this year.
    • Budgetary Relevance: The FAE are crucial for the Union Finance Ministry’s budgetary planning for the next financial year, as the SAE are published after the budget is finalized.
    • Focus on Nominal GDP: For budget-making, the emphasis is on nominal GDP (the observed variable), including both its absolute level and growth rate.
    • Real vs. Nominal GDP: Real GDP, adjusted for inflation, is a derived metric, whereas all budget calculations commence with nominal GDP.

    GDP Growth Analysis

    • Real GDP Growth: The real GDP (adjusted for inflation) is expected to reach nearly Rs 172 lakh crore by March 2024.
    • Comparison with Modi’s Tenure: The GDP has grown from Rs 98 lakh crore at the start of Prime Minister Modi’s first term to almost Rs 140 lakh crore at the beginning of his second term.
    • Growth Rate Trends: The estimated 7.3% growth for 2023-24 is higher than most forecasts, indicating a strong economic recovery. However, there’s a noticeable deceleration in growth during Modi’s second term compared to the first.

    Factors Driving India’s Growth

    • Private Final Consumption Expenditure (PFCE): Accounting for almost 60% of GDP, PFCE is expected to grow by 4.4% in the current year.
    • Gross Fixed Capital Formation (GFCF): Investment spending, the second-largest growth engine, has grown by 9.3% this year.
    • Government Final Consumption Expenditure (GFCE): Government spending growth has been slower, at 3.9% in the current year.
    • Net Exports: The negative growth in net exports indicates a higher import-than-export rate, which has increased by 144% this year.

    Concerns and Challenges

    • Private Consumption: Muted private consumption, especially in rural India, remains a concern.
    • Investment Spending: A significant portion of investment spending is still driven by the government, with private consumption remaining subdued.
    • Government Spending: Government spending growth has been relatively low in the second term of Modi’s government.
    • Net Exports: The negative growth in net exports, though a mild improvement over the two terms, still indicates an imbalance in trade.

    Conclusion

    • Economic Recovery: The 7.3% growth rate suggests a robust economic recovery post-pandemic.
    • Balanced Growth: The need for balanced growth across all sectors, especially in boosting private consumption and investment, is critical for sustainable development.
    • Future Prospects: The ongoing economic policies and reforms will play a crucial role in shaping India’s growth trajectory in the coming years.

    https://indianexpress.com/article/explained/explained-economics/gdp-data-advance-estimates-9099092/

  • AI-Driven Bio-Imaging Bank for Cancer Detection

    Introduction

    • The rising number of cancer cases and the shortage of specialists present a significant challenge in reducing fatalities.
    • Mumbai’s Tata Memorial Hospital (TMH) is leveraging artificial intelligence (AI) to create a ‘Bio-Imaging Bank’ for early-stage cancer detection.

    What is a ‘Bio-Imaging Bank’?

    • Comprehensive Repository: The Bio-Imaging Bank is a repository containing radiology and pathology images linked with clinical information, outcome data, treatment specifics, and additional metadata.
    • AI Integration: The project uses deep learning to develop a cancer-specific tailored algorithm for early detection, incorporating data from 60,000 patients.

    Project Scope and Collaboration

    • Focus on Specific Cancers: Initially targeting head and neck cancers and lung cancers, the project aims to collect data for at least 1000 patients for each type.
    • Multi-Institutional Effort: Funded by the Department of Biotechnology, the project involves collaboration with IIT-Bombay, RGCIRC-New Delhi, AIIMS-New Delhi, and PGIMER-Chandigarh.

    AI’s Role in Early Cancer Detection

    • Learning from Data: AI analyzes extensive datasets of radiological and pathological images to recognize features associated with various cancers.
    • Early Detection: By identifying tissue changes and potential malignancies, AI facilitates early cancer detection, crucial for effective treatment.

    TMH’s Implementation of AI

    • Data Annotation and Correlation: The team segments and annotates images, correlating them with biopsy results, histopathology reports, and genomic sequences to develop algorithms.
    • Clinical Utility: Algorithms developed from the bio-bank assess treatment responses and guide treatment plans, reducing unnecessary chemotherapy for predicted non-responders.

    Current Usage of AI in Cancer Detection

    • Radiation Reduction: TMH has used AI to reduce radiation exposure for pediatric patients undergoing CT scans by 40%.
    • Thoracic Radiology: An AI algorithm in the ICU for thoracic radiology provides immediate diagnoses with 98% accuracy after doctor validation.

    Future of AI in Cancer Treatment

    • Transformative Potential: AI is expected to tailor treatment approaches based on patient profiles, optimizing therapy outcomes, especially in rural India.
    • Simplifying Diagnosis: AI could enable general practitioners to diagnose complex cancers with a simple click, enhancing precision in cancer solutions.
    • Continuous Learning: As AI continuously learns and improves, it promises timely cancer diagnoses, better patient outcomes, and support for healthcare professionals.
    • Debates and Resistance: The use of AI tools in healthcare raises debates about the potential replacement of human radiologists and faces regulatory scrutiny and resistance from some doctors and health institutions.

    Conclusion

    • Enhancing Detection and Treatment: Tata Memorial Hospital’s AI-driven Bio-Imaging Bank represents a pioneering step in enhancing cancer detection and treatment, promising a future where technology significantly improves patient care and outcomes.
    • Balancing Technology and Human Expertise: While AI offers immense potential, it’s crucial to balance technological advancements with human expertise and address ethical and regulatory considerations to ensure the best possible care for patients.

  • Social Media row between India and Maldives over Tourism

    maldives

    Introduction

    • Trigger: PM Modi’s social media posts promoting tourism in Lakshadweep led to a contentious exchange between Maldivian politicians, government officials, and Indian social media users.
    • Context: The posts highlighted Lakshadweep’s beauty but did not mention the Maldives or other island nations.
    • Maldivian Reaction: Following PM Modi’s posts, some Maldivian social media users, including government officials, responded with offensive and derogatory comments targeting Indians and the Prime Minister.

    Escalation of the Issue

    • Sensational Headlines: Local Maldivian news websites sensationalized the issue, falsely claiming that India was campaigning against Maldivian tourism.
    • Government Officials’ Involvement: High-ranking Maldivian officials engaged in the social media dispute, exacerbating the situation.

    Maldivian Social Media Campaign

    • #VisitMaldives Hashtag: In response to India’s promotion of Lakshadweep, Maldivian officials and supporters pushed the ‘#VisitMaldives’ hashtag, featuring local resorts and beaches.
    • Territorial Claims: Some Maldivian users falsely claimed that Lakshadweep is not Indian territory but belongs to the Maldives.

    Accusations Against India

    • Alleged Competition: Maldivian social media users accused India of trying to compete with the Maldives as a tropical vacation destination.
    • Racist Remarks: The posts led to a range of racist comments against Indians and Indian tourists.

    Maldives’ Dependency on Tourism

    • Significant Indian Tourist Numbers: Indians form a large group of tourists visiting the Maldives, with over 200,000 travelers in 2023.
    • Economic Impact: Tourism is crucial for the Maldives, accounting for over 28% of its GDP.

    Indian Response

    • Boycott Calls: Some Indian users called for a boycott of Maldivian hotels and resorts.
    • Highlighting Bilateral Cooperation: Others emphasized India’s assistance to the Maldives and aspects of bilateral cooperation.
    • Celebrity Support: Bollywood celebrities and Indian sportspersons initiated a ‘Visit Lakshadweep’ campaign in response to the controversy.

    Roots of Anti-India Sentiments

    • Historical Campaign: Anti-India sentiments have been present since the ‘India Out’ campaign, which started in 2020 and was promoted by former president Abdulla Yameen Abdul Gayyoom.
    • Muizzu Government’s Stance: The current Maldivian government, under President Mohamed Muizzu, has been fulfilling campaign promises, including withdrawing Indian military personnel from the Maldives.

    Criticism Within the Maldives

    • Opposition’s Stance: Not all in the Maldives support the government’s stance, with some politicians and diplomats criticizing the derogatory comments.
    • Lack of Diplomatic Experience: Critics argue that some government officials lack experience and understanding of diplomacy.

    Maldivian Government’s Reaction

    • Official Statement: The Maldives’ Ministry of Foreign Affairs issued a statement distancing the government from the derogatory remarks.
    • Cyber Attack Suspicions: Following the incident, several Maldivian government websites, including the foreign ministry, were suspected to be under cyber-attack.

    Conclusion

    • Surprise and Disappointment: The incident has surprised many in India and the Maldives, given the history of diplomatic support and cooperation.
    • Unlikely to Affect Relations: Analysts believe the conduct of a few individuals is unlikely to impact broader India-Maldives bilateral relations.
    • Need for Diplomatic Sensitivity: The episode underscores the importance of maintaining respectful and diplomatic communication between neighboring countries.

  • IIT-D develops India’s first National Landslide Susceptibility Map

    Introduction

    • In the wake of severe monsoon-triggered landslides, IIT Delhi has developed its first National Landslide Susceptibility Map.

    About National Landslide Susceptibility Map

    • High-Resolution Mapping: The map offers a detailed (100 sq. m resolution) overview of landslide susceptibility across India, including previously unrecognized areas.
    • Revealing New Risk Zones: It highlights traditional high-risk areas and uncovers new regions of concern, broadening the scope of landslide monitoring.
    • Innovative Analysis Method: An ensemble machine learning approach was utilized to enhance prediction accuracy and address data gaps in uncharted regions.
    • Advantages of Ensemble Models: This method effectively combines multiple models to provide a more reliable estimation of landslide risks.

    Data Gathering and Analytical Process

    • Extensive Data Compilation: Researchers collated data on around 150,000 landslide incidents from various sources, including the Geological Survey of India.
    • Identifying Contributing Factors: The team pinpointed 16 critical factors influencing landslide susceptibility, utilizing tools like GeoSadak for remote data collection.

    Implications for Disaster Management

    • Tool for Stakeholders: The map serves as a critical resource for government bodies, disaster management authorities, and organizations focused on landslide mitigation.
    • Enhancing Preparedness and Planning: It will facilitate vulnerability assessment, infrastructure planning, and implementation of mitigation measures.

    Need for such map

    • Persistent Hazard: Landslides, affecting a small but significant portion of India, pose a recurrent threat, especially in hilly regions.
    • Challenges in Management: The localized and sporadic nature of landslides has historically hindered effective tracking and prediction, underscoring the need for a comprehensive mapping solution.

    Future Directions and Public Accessibility

    • Developing an Early Warning System: Building on the map, efforts are underway to create a comprehensive Landslide Early Warning System.
    • Infrastructure Vulnerability Cartogram: A cartogram to identify susceptible infrastructure is also in progress.
    • Public Access and Engagement: The map and its data will be accessible through a web interface, promoting public interaction and awareness.

  • Aditya-L1 successfully placed in a Halo Orbit around L1 Point

    aditya

    Introduction

    • The Indian Space Research Organisation (ISRO) has achieved a significant milestone by placing the Aditya-L1 spacecraft in a halo orbit around the Lagrangian point (L1).
    • Launched on September 2, 2023, Aditya-L1 reached the L1 point on January 6, after a 127-day journey covering 1.5 million km.

    What is a Halo Orbit?

    • Halo orbits are three-dimensional, periodic orbits around Lagrange points in a two-body system like Earth-Sun or Earth-Moon.
    • It is commonly linked with L1, L2, and L3 Lagrange points, where the gravitational forces of two large bodies and centrifugal force balance each other.
    • It provides a stable line of sight to Earth and the Sun, beneficial for continuous communication and solar power.
    • Unlike typical two-dimensional orbits, halo orbits form a 3D loop, resembling a halo around Lagrange points.
    • These orbits, especially around L1 and L2 points, require periodic adjustments for a spacecraft to maintain its trajectory.
    • It offers energy-efficient positions in space due to balanced gravitational forces, requiring minimal propulsion for orbit maintenance.
    • James Webb Space Telescope utilizes a halo orbit around the Earth-Sun L2 point for a stable observation position.

    Aditya-L1’s Mission Objectives and Operations

    • Orbit Characteristics: Aditya-L1 is in a periodic halo orbit around L1, approximately 1.5 million km from Earth, with an orbital period of about 177.86 days.
    • Mission Life and Goals: With a mission life of five years, Aditya-L1 aims to study the sun’s photosphere, chromosphere, and corona, along with in-situ studies of particles and fields at L1.
    • Continuous Solar Observation: The satellite’s position allows for uninterrupted solar observation, crucial for understanding solar activities and space weather dynamics.

    Understanding Lagrange Points and L1

    • Lagrange Points Explained: Lagrange Points are positions in space where a small object can maintain its position relative to two larger bodies due to the gravitational balance.
    • L1 Point Advantage: The L1 point, located about 1.5 million km from Earth, offers continuous solar viewing without occultation or eclipse, providing a strategic advantage for solar observation.

    Aditya-L1’s Journey Timeline

    • Launch and Initial Orbits: Following its launch, ISTRAC conducted four earth-bound maneuvers to position Aditya-L1 in progressively higher orbits.
    • Trans-Lagrangian1 Insertion: The spacecraft underwent a crucial manoeuvre on September 19, marking the start of its 110-day journey to L1.

    Why Study the Sun?

    • Understanding Solar Dynamics: Studying the sun is crucial for comprehending its energy production, temperature variations, and radiation emissions.
    • Monitoring Solar Activities: Continuous monitoring of solar flares and coronal mass ejections is vital for predicting space weather and mitigating its impact on space-reliant technologies.

    Conclusion

    • Unprecedented Solar Study: Aditya-L1’s unique position and advanced instruments enable an unparalleled study of the sun, contributing significantly to our understanding of solar phenomena.
    • ISRO’s Achievement: This successful mission underscores ISRO’s expertise in navigating complex space missions and reinforces India’s position as a leading player in space exploration and research.