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  • Languages and Eighth Schedule

    A school closure that must be called out

    Why in the News?

    The shutdown of the only Gondi-medium school in Maharashtra’s Gadchiroli district, which was started in 2019 by the Mohgaon gram panchayat, raises concerns about tribal students learning in their own language.

    What constitutional provisions support the preservation of Adivasi languages and cultures in India?

    • Article 29: Protects the rights of minorities to conserve their distinct languages, scripts, and cultures.
    • Article 350A: Directs the state to provide adequate facilities for instruction in the mother tongue at the primary education level for minority children.
    • Fifth Schedule: Provides special protections and governance provisions for Scheduled Areas, where many Adivasi communities reside.
    • Sixth Schedule: Grants autonomy to certain tribal areas in the northeastern states, allowing self-governance and cultural preservation.
    • Panchayats (Extension to the Scheduled Areas) Act, 1996 (PESA): Recognizes the role of gram sabhas in self-governance, including decisions related to education in tribal areas.

    How do the forces of absorption in secular and religious realms impact Adivasi communities?

    • Marginalization of Adivasi Languages in Education: Adivasi students are forced to learn in dominant languages, leading to the decline of their mother tongues and weakening of cultural identity. Example: The closure of the Gondi-medium school in Maharashtra due to non-recognition under the Right to Education Act.
    • Loss of Land and Displacement Due to Development Projects: Adivasi communities are displaced from their ancestral lands due to industrial and infrastructural projects, leading to economic instability and cultural loss. Example: Large-scale mining and dam projects in Jharkhand and Chhattisgarh have forced many Adivasis to migrate to urban slums.
    • Religious Assimilation and Erosion of Indigenous Beliefs: Traditional tribal religious practices are undermined or replaced by dominant religions, leading to cultural homogenization. Example: The decline of Sarna worship among Adivasis due to conversions to Hinduism and Christianity.
    • Market-Driven Cultural Appropriation: Tribal art, music, and traditions are exploited for commercial purposes without benefiting the Adivasi creators. Example: Warli and Gond paintings being sold globally, while many Adivasi artists remain in poverty.
    • Denial of Political and Constitutional Recognition: The lack of official recognition for Adivasi languages and cultures weakens their identity and limits access to resources and opportunities. Example: Gondi, spoken by over 2.9 million people, is not included in the Eighth Schedule of the Constitution, whereas Sanskrit, spoken by fewer than 25,000, is recognized.

    What are the steps taken by the government?

    • National Education Policy (NEP) 2020: Emphasizes mother-tongue-based education at the primary level, promoting indigenous languages. Example: Bilingual textbooks in tribal languages have been introduced in states like Odisha and Jharkhand.
    • Eklavya Model Residential Schools (EMRS): Aims to provide quality education to tribal students while incorporating their cultural heritage. Example: Over 700 EMRS schools are planned across India, with some offering instruction in tribal languages.
    • Documentation and Digital Preservation Initiatives: Projects to document and preserve endangered tribal languages and cultures. Example: The Scheme for Protection and Preservation of Endangered Languages (SPPEL) under the CIIL (Central Institute of Indian Languages) focuses on documenting languages like Gondi.

    What are the factors that highlight the contrast between the recognition of Sanskrit and Gondi in the Eighth Schedule?

    • Oral vs. Textual Tradition: Sanskrit has a vast corpus of classical texts and scriptures, whereas Gondi follows an oral tradition, making it vulnerable to erosion without formal preservation efforts. Example: Ancient Sanskrit texts like the Vedas are archived and studied, but Gondi folklore and oral histories are at risk of being lost due to a lack of institutional documentation.
    • Number of Speakers: Gondi is spoken by over 2.9 million people across six states, while Sanskrit has fewer than 25,000 speakers. Example: Despite its widespread use among Adivasi communities, Gondi remains unrecognized, whereas Sanskrit, with a much smaller speaker base, is included in the Eighth Schedule.
    • State Support and Promotion: Sanskrit receives government funding, university courses, and institutional backing, whereas Gondi lacks state-supported educational and literary initiatives. Example: Sanskrit is taught in schools and has dedicated institutions like the Rashtriya Sanskrit Sansthan, while Gondi-medium schools struggle for recognition, such as the case in Maharashtra.
    • Socio-Political Influence: Sanskrit is associated with elite Brahminical traditions and enjoys support from powerful socio-political groups, whereas Gondi is linked to marginalized Adivasi communities with limited political representation. Example: Political leaders and policymakers advocate for Sanskrit’s preservation, but there is little lobbying for Gondi’s inclusion in the Eighth Schedule.
    • Economic and Employment Relevance: Sanskrit is promoted as a classical and sacred language, but it has minimal practical usage in employment, whereas Gondi is actively spoken by tribal communities in daily life. Example: Sanskrit is used in religious and academic contexts, while Gondi is the primary language for communication among Adivasis, yet lacks state recognition.

    Way forward: 

    • Institutional Recognition and Policy Support: Need to include Gondi and other major Adivasi languages in the Eighth Schedule to ensure constitutional recognition, funding for education, and cultural preservation.
    • Community-Led Preservation and Promotion: The Government should strengthen grassroots efforts by empowering Adivasi organizations, establishing indigenous language schools, and promoting digital documentation of oral traditions.

    Mains PYQ:

    Q Given the diversities among tribal communities in India, in which specific contexts should they be considered as a single category? (UPSC IAS/2022) 

    Reason- This question is relevant because the closure of the Gondi-medium school highlights the specific educational needs of a particular tribal community (Gondi speakers).

  • Coal and Mining Sector

    India’s 1st Exploration Licence Auction for Critical Minerals

    Why in the News?

    Union Coal and Mines Minister has launched the first-ever auction of Exploration Licences (ELs) for 13 critical mineral blocks.

    About the Critical Minerals Exploration Policy

    • India’s Critical Minerals Policy is designed to reduce import dependence, boost domestic production, and ensure secure access to essential minerals required for modern technology, defense, and clean energy.
    • It is driven by amendments to the Mines and Minerals (Development and Regulation) Act (MMDR), 2023, introduces systematic exploration, private sector participation, and transparent auctions.
    • Key Features of the Policy:
      • Private Sector Involvement: Allows private companies to explore and develop mineral blocks through Exploration Licences (ELs).
      • Transparent Auction Process: Introduces an auction-based allocation of exploration blocks, ensuring efficiency and competition.
      • Focus on Deep-Seated Minerals: Encourages the exploration of hard-to-extract minerals like lithium, rare earth elements (REEs), and platinum group metals (PGMs).
      • Financial Support for Exploration: Provides risk-sharing mechanisms, where 50% of exploration costs are borne by the government if minerals are not found.

    What are Critical Minerals?

    • Critical minerals are essential elements required for high-tech industries, clean energy technologies, and national security.
    • They are however at risk of supply chain disruptions due to their limited availability or geopolitical factors.
    • India’s 30 Critical Minerals (2023 List) includes: Lithium, Cobalt, Nickel, Graphite, Rare Earth Elements (REEs), Platinum Group Elements (PGEs), Silicon, Phosphorous, Potash, Tin, Tungsten, Vanadium, Zirconium, and others.

    Uses of Critical Minerals:

    • Electronics & Semiconductors: Copper, gallium, germanium, indium.
    • Electric Vehicles & Batteries: Lithium, cobalt, nickel, graphite.
    • Renewable Energy Technologies: Rare Earth Elements (REEs) for wind turbines and solar panels.
    • Aerospace & Defense: Titanium, tungsten, platinum group elements (PGEs).

    PYQ:

    [2019] With reference to the management of minor minerals in India, consider the following statements:

    1. Sand is a ‘minor mineral’ according to the prevailing law in the country.
    2. State governments have the power to grant mining leases of minor minerals, but the powers regarding the formation of rules related to the grant of minor minerals lie with the Central Government.
    3. State Governments have the power to frame rules to prevent illegal mining of minor minerals.

    Which of the statements given above is/are correct?

    (a) 1 and 3

    (b) 2 and 3

    (c) 3 only

    (d) 1, 2 and 3

     

  • Zoonotic Diseases: Medical Sciences Involved & Preventive Measures

    Bird Flu is Spreading in Bihar

    Why in the News?

    Bihar is currently facing a bird flu outbreak, yet the state lacks a dedicated testing facility for confirming cases.

    What is H5N1 Bird Flu?

    • H5N1 (Avian Influenza A) is a highly contagious virus affecting birds and some mammals.
    • It was first detected in China in 1996 and has since spread globally, including India.
    • In 2020, a highly pathogenic strain emerged, leading to outbreaks in Europe, Africa, Asia, and the Americas.

    Impact of H5N1 on Animals:

    • Wild birds, especially endangered species like California condors, have suffered mass casualties.
    • The virus previously targeted poultry, but now marine mammals (sea lions, dolphins) and terrestrial mammals (foxes, bears, pumas, minks) are also infected.
    • India’s first H5N1 outbreak occurred in Maharashtra and Gujarat in 2015.

    Human Risk and Potential Transmission:

    • Direct human infections are rare and usually occur through close contact with infected birds.
    • Climate change is worsening the spread, altering bird migration patterns and increasing interspecies interactions.
    • Human-to-human transmission is uncommon, but experts warn that mutations could make it possible in the future.

    PYQ:

    [2015] H1N1 virus is sometimes mentioned in the news with reference to which one of the following diseases?

    (a) AIDS

    (b) Bird flu

    (c) Dengue

    (d) Swine flu

     

  • ISRO Missions and Discoveries

    Aditya-L1 Mission: Scientists observe a Flareless Coronal Mass Ejection

    Why in the News?

    India’s first solar mission, Aditya-L1, has made a significant scientific observation—a flareless Coronal Mass Ejection (CME) using the Visible Emission Line Coronagraph (VELC) Payload.

    About Flareless Coronal Mass Ejection (CME)

    • A Flareless CME is a solar eruption that occurs without an associated solar flare.
    • Unlike typical CMEs, which are often linked to intense bursts of electromagnetic radiation, flareless CMEs result from magnetic instabilities in the solar corona without sudden energy releases.

    Key Features of Flareless CMEs:

    • No Solar Flare Trigger: Unlike most CMEs, they do not originate from an intense energy burst.
    • Magnetic Instability Driven:  Plasma ejection occurs due to internal rearrangements in the Sun’s magnetic field.
    • Gradual Energy Release: These CMEs may expand more slowly compared to CME-flare events.
    • Scientific Significance: Helps differentiate CME mechanisms from flare activities, improving space weather forecasts.

    About the Aditya-L1 Mission

    • Aditya-L1 is India’s first space-based observatory dedicated to solar studies.
    • Launched by ISRO, it is positioned at Lagrange Point 1 (L1), about 1.5 million km from Earth.
    • It takes 125 days to reach L1, where gravitational equilibrium allows continuous solar observation.
    • It is India’s second space observatory after AstroSat (2015).
    • Mission Objectives:
      • Study the solar corona, photosphere, chromosphere, and solar wind dynamics.
      • Monitor solar activity, flares, and CMEs to predict space weather events.
      • Provide early warnings for geomagnetic storms affecting Earth’s satellites and power grids.
    • Scientific Instruments:
      1. Visible Emission Line Coronagraph (VELC): Observes the solar corona and tracks CMEs.
      2. Solar Ultraviolet Imaging Telescope (SUIT): Captures images of the Sun’s lower atmosphere.
      3. Solar Low Energy X-ray Spectrometer (SoLEXS):  Measures soft X-ray emissions from the Sun.
      4. High Energy L1 Orbiting X-ray Spectrometer (HEL1OS): Detects high-energy solar X-rays.
      5. Aditya Solar Wind Particle Experiment (ASPEX): Studies solar wind particles and their impact on space weather.
      6. Plasma Analyser Package for Aditya (PAPA): Analyzes plasma properties in the solar wind.
      7. Magnetometer: Measures magnetic field variations at L1.

    PYQ:

    [2022] If a major solar storm (solar flare) reaches the Earth, which of the following are the possible effects on the Earth ?

    1. GPS and navigation systems could fail.

    2. Tsunamis could occur at equatorial regions.

    3. Power grids could be damaged.

    4. Intense auroras could occur over much of the Earth.

    5. Forest fires could take place over much of the planet.

    6. Orbits of the satellites could be disturbed.

    Select the correct answer using the code given below:

    (a) 1 and 2 only (b) 3 and 4 only (c) 1, 3, 4 and 6 only (d) 2, 5 and 6 only

     

  • Promoting Science and Technology – Missions,Policies & Schemes

    Centre makes ‘Quantum Hub’ operational

    Why in the News?

    The Government of India has launched four Thematic Hubs (T-Hubs) for quantum computing research, with Uttar Pradesh receiving the highest allocation of ₹28.7 crore for quantum technology development in FY 2024-25, followed by Karnataka, Maharashtra, Delhi, and Tamil Nadu.

    About the Quantum Hubs

    • Quantum Hubs, also known as Thematic Hubs (T-Hubs), are specialized research centres established under India’s National Quantum Mission (NQM).
    • They are designed to drive innovation, research, and development in different aspects of quantum technology.
    • Four T-Hubs have been established in leading academic institutions.
    • Each hub focuses on a specific domain of quantum research:
      1. Quantum Computing (IISc Bengaluru).
      2. Quantum Communication (IIT Bombay).
      3. Quantum Sensing & Metrology (IIT Delhi).
      4. Quantum Materials & Devices (IIT Madras).
    • IIT Kanpur serves as the management coordinating center, overseeing administration and funding allocation.
    • The hubs operate across 17 States and 2 Union Territories, with 14 technical research groups collaborating on different projects.

    About National Quantum Mission (NQM)

    • The NQM was launched by the Union Cabinet on April 19, 2023, with a total budget of ₹6,003.65 crore for a period of eight years (2023-2031).
    • It is implemented by the Department of Science & Technology (DST), Ministry of Science & Technology.
    • The mission aims to build intermediate-scale quantum computers, starting with:
      1. 20-50 qubits in 3 years,
      2. 50-100 qubits in 5 years, and
      3. 50-1,000 qubits in 8 years.
    • Additionally, it seeks to establish satellite-based quantum communication over 2,000 km within India, inter-city quantum key distribution (QKD), and multi-node quantum networks.

    PYQ:

    [2022] Which one of the following is the context in which the term “qubit” is mentioned?

    (a) Cloud Services

    (b) Quantum Computing

    (c) Visible Light Communication Technologies

    (d) Wireless Communication Technologies

     

  • Women empowerment issues – Jobs,Reservation and education

    The gender budget — bigger allocations, little impact

    Why in the News?

    The Union Budget 2025-26 has increased funding for women-centric schemes to ₹4.49 lakh crore, a 37.25% rise from ₹3.27 lakh crore in the previous year. This increase remains significant even after accounting for an estimated inflation rate of 3.61%.

    What are the major reasons for the underutilisation of funds allocated under the Scheduled Castes Sub-Plan (SCSP) and Tribal Sub-Plan (TSP)?

    • Bureaucratic Delays and Complex Procedures: In many states, lengthy approval processes and multi-tiered administrative hurdles delay fund disbursement, preventing timely implementation of welfare schemes. The “Post-Matric Scholarship for SC/ST Students” often faces delays due to slow bureaucratic processing.
    • Lack of Community Involvement in Planning: The absence of direct consultation with SC/ST communities results in schemes that do not align with their specific needs.
      • In tribal areas, the lack of local representation has led to the failure of livelihood programs tailored for forest-based communities.
    • Inadequate Awareness and Outreach: Many eligible beneficiaries are unaware of available programs due to poor dissemination of information. Despite a substantial allocation to the “Pradhan Mantri Adarsh Gram Yojana,” low awareness among SC/ST households has limited its reach.
    • Underutilisation due to Misallocation: Funds intended for targeted development are often diverted to general welfare projects, reducing the impact on SC/ST communities. In some states, funds under the TSP have been used for infrastructure projects that do not directly benefit tribal populations.
    • Digital and Procedural Barriers: The shift to digital application processes without adequate digital literacy programs has excluded many SC/ST beneficiaries. In Rajasthan, digitization of welfare schemes like “PVTG Development Programmes” has created barriers for those lacking internet access or digital skills.

    Why is the lack of gender-disaggregated data within SCSP and TSP a major challenge in assessing the impact on SC/ST women?

    • Inability to Measure Gender-Specific Outcomes: Without data distinguishing male and female beneficiaries, it’s challenging to evaluate the effectiveness of initiatives aimed at SC/ST women.
      • For instance, literacy rates among SC women stand at 56.5%, and among ST women at 49.4%, compared to the national female literacy rate of 64.63%.
    • Failure to Address Intersectional Disparities: SC/ST women experience layered discrimination based on caste, gender, and class. Without data distinguishing their experiences, policies fail to address these overlapping vulnerabilities.
      • For example, in tribal areas, women’s access to maternal healthcare remains poor because gender-specific needs are not reflected in TSP allocations.
    • Ineffective Policy Design and Implementation: The absence of gender-specific data prevents the government from designing targeted interventions and monitoring their effectiveness.
      • In the Pradhan Mantri Awas Yojana (Gramin), there is no separate data on SC/ST women beneficiaries, making it difficult to assess if they are receiving adequate housing support.

    How has digitalisation created new barriers for women, particularly those from marginalised communities?

    • Limited Digital Literacy and Access: Many women from SC/ST and other marginalised groups lack basic digital skills, making it difficult to access welfare schemes and online services. For instance, beneficiaries of the Pradhan Mantri Jan Dhan Yojana often struggle to navigate digital banking platforms, leading to dependency on intermediaries.
    • Exclusion Due to Lack of Digital Infrastructure: Poor digital infrastructure in rural and tribal areas limits women’s ability to participate in digital governance processes. For example, the Aadhaar-linked Public Distribution System (PDS) often fails to deliver benefits to women in remote regions due to biometric authentication issues.
    • Increased Dependence on Intermediaries: Digital processes intended to reduce corruption have increased reliance on middlemen for those who cannot navigate online systems. For instance, women applying for the PM Ujjwala Yojana face difficulties completing online applications, forcing them to seek help and sometimes pay additional fees.

    Case study:  What lessons can be drawn from Kerala’s Kudumbashree mission to improve the effectiveness of gender budgets?

    • Community-Led Participatory Approach: Involving women from the grassroots level in planning, implementation, and monitoring ensures that schemes address their real needs. For instance, Kudumbashree’s neighbourhood groups empower women to influence local budget decisions, ensuring better allocation and utilisation of resources.
    • Transparent Monitoring and Accountability: Regular audits and community-based tracking improve fund utilisation and prevent leakages. For example, Kudumbashree’s micro-level monitoring system tracks welfare schemes, ensuring funds reach the intended beneficiaries and improving service delivery.

    Way forward: 

    • Strengthen Data Systems and Targeted Monitoring: Implement gender-disaggregated and caste-specific data collection within SCSP and TSP to track the impact on SC/ST women and address intersectional vulnerabilities effectively.
    • Enhance Digital and Community Accessibility: Invest in digital literacy programs and community-based facilitation to ensure equitable access to welfare schemes, especially for women in rural and marginalised communities.

    Mains PYQ:

    Q  Distinguish between gender equality, gender equity and women’s empowerment. Why is it important to take gender concerns into account in programme design and implementation? (UPSC IAS/2024)

  • Languages and Eighth Schedule

    India’s choice between progress and parochialism

    Why in the News?

    India faces a challenge in advancing global technology and promoting cultural nationalism.

    What are the key contradictions between India’s linguistic policies and its ambitions for global technological leadership?

    • Promotion of Global Tech Leadership vs. Linguistic Nationalism: While the government advocates for technological innovation and global collaboration (e.g., PM Modi’s co-chairing of the AI Action Summit in Paris), cultural nationalist groups like the RSS push to reject English and promote indigenous languages. Example: Maharashtra’s mandate to prioritize Marathi in government offices conflicts with the need for English proficiency in global tech and business environments.
    • Dual Education System: Private schools emphasize English, preparing students for global opportunities, while most government schools focus on regional languages, limiting access to global knowledge. Example: Elite private-school graduates secure jobs in multinational tech firms, while students from regional-language schools face barriers in competitive industries like AI and software development.
    • Language as Identity vs. Economic Pragmatism: While India debates language as a cultural marker, other countries treat English as a tool for economic advancement. Example: China and South Korea prioritize English proficiency to foster technological growth, whereas India’s linguistic nationalism hampers similar progress.
    • Global Collaboration vs. Linguistic Isolation: Success in emerging fields like AI requires collaboration in English-led international forums, but domestic policies discourage its widespread adoption. Example: Israel mandates English alongside STEM education, enabling global research participation, while India’s restrictive policies hinder such integration.
    • Access to AI and Digital Technologies: AI technologies are predominantly developed and documented in English, yet linguistic policies limit access for a majority of Indians. Example: Indian startups working on AI and machine learning struggle to scale globally due to the language barrier affecting workforce readiness.

    Why is English proficiency considered crucial for India’s future workforce in the AI-driven economy?

    • Access to Global Knowledge and Innovation: Most research papers, technical documentation, and AI frameworks are published in English. Without proficiency, Indian professionals face barriers to understanding and applying the latest advancements. Example: Cutting-edge AI models like GPT and TensorFlow are primarily documented in English, making it essential for developers to engage with and innovate using these tools.
    • Enhanced Employment Opportunities: English is the dominant language in multinational companies and global tech ecosystems. Proficiency opens doors to better-paying jobs and international collaborations. Example: Indian engineers fluent in English are preferred by global tech giants like Google, Microsoft, and Meta for roles in AI development and data science.
    • Participation in Global AI Governance and Policy: As AI evolves, international regulatory frameworks and ethical discussions are conducted in English. Without linguistic competence, India risks being sidelined in shaping global AI norms. Example: India’s ability to contribute to forums like the Global Partnership on AI (GPAI) depends on having experts who can engage in technical and policy dialogues in English.

    Which regions in India demonstrate better educational and economic outcomes due to their multilingual approach?

    • Southern States (Kerala, Karnataka, Tamil Nadu): These states follow a three-language policy (regional language, Hindi, and English) in schools, ensuring proficiency in English while preserving local identity. Example: Bengaluru in Karnataka is a leading global technology hub, attracting investments in AI and IT due to a highly skilled, multilingual workforce.
    • Western States (Maharashtra, Gujarat): Urban areas in these states emphasize English-medium education alongside regional languages, enabling access to both domestic and international job markets. Example: Mumbai’s multilingual workforce supports thriving sectors like finance, media, and global trade, making it India’s economic powerhouse.
    • Union Territories (Delhi, Chandigarh): The education system here integrates English, Hindi, and local languages, fostering linguistic adaptability and attracting businesses requiring bilingual professionals. Example: Delhi’s multilingual policies contribute to its prominence in sectors like legal services, information technology, and international commerce.

    Way forward: 

    • Balanced Language Policy: Implement a multilingual education framework that promotes regional languages while ensuring universal access to English from an early age to enhance global competitiveness.
    • Inclusive Digital Ecosystem: Invest in translating AI resources and technical content into regional languages while encouraging English proficiency to bridge the linguistic divide in emerging technologies.

    Mains PYQ:

    Q Is diversity and pluralism in India under threat due to globalisation? Justify your answer.” (2019) 

  • Zoonotic Diseases: Medical Sciences Involved & Preventive Measures

    What is Hantavirus and how does it spread?

    Why in the News?

    Betsy Arakawa, wife of Oscar-winning actor Gene Hackman, died from a respiratory illness linked to hantavirus, a rare disease transmitted by infected rodents, officials have confirmed.

    What is Hantavirus?

    • Hantavirus is a family of viruses carried by rodents that cause severe illnesses in humans. The two primary diseases it causes are:
    1. Hantavirus Pulmonary Syndrome (HPS) – A fatal respiratory illness common in the Americas.
    2. Hemorrhagic Fever with Renal Syndrome (HFRS) – Affects the kidneys and causes internal bleeding, mostly found in Asia and Europe.
    • Hantavirus spreads through contact with infected rodent waste, primarily via:
      • Inhalation (Aerosolization) – Breathing in airborne particles from rodent urine, droppings, or saliva.
      • Direct Contact – Touching contaminated surfaces and then touching the eyes, nose, or mouth.
      • Open Wounds – Virus entering through cuts or scratches.
      • Rodent Bites (Rare).
      • Human-to-Human Transmission – Extremely rare, except for Andes virus in South America.

    Is there a Cure or Treatment?

    • No specific antiviral treatment or vaccine exists.
    • Medical care focuses on symptom management:
      • Oxygen therapy for breathing difficulties.
      • ICU support & mechanical ventilation in severe cases.
    • Early detection is crucial – Seek medical help immediately after potential rodent exposure.
  • ISRO Missions and Discoveries

    ISRO undocks SpaDex Satellites in First Attempt

    Why in the News?

    India achieved a major milestone in space docking technology with the successful undocking of satellites under the SpaDeX mission, marking ISRO’s first-ever undocking operation on March 14, 2025, just two months after the initial docking.

    With this success, India joins an elite group of nationsthe U.S., Russia, and China—that have demonstrated space docking and undocking capabilities.

    What is PSLV-C60 SpaDeX Mission?

    • The PSLV-C60 SpaDeX Mission is a landmark mission aimed at demonstrating in-space docking and undocking technology.
    • This mission would position India as the fourth country in the world to master space docking, following the US, Russia, and China.
    • Objective:
      • To demonstrate the docking, undocking, and rendezvous capabilities of two satellites in low-Earth orbit (LEO).
      • Facilitate power transfer between docked spacecraft, an essential capability for future space missions.
    • Satellites: (Each weighing 220kg.)
      • SDX01 (Chaser): Equipped with a High-Resolution Camera (HRC).
      • SDX02 (Target): Carries a Miniature Multispectral Payload (MMX) and a Radiation Monitor (RadMon).
    • Configuration:
      • The satellites will be launched using the Polar Satellite Launch Vehicle (PSLV-C60) in a core-alone (CA) configuration, meaning without strap-on boosters.
      • They will be placed in a 476-km circular orbit with an inclination of 55°.
    • Post-Docking:
      • After the docking demonstration, the satellites will continue standalone missions for two years, conducting imaging, natural resource monitoring, and radiation environment studies.
    • Significance: It is a strategic step towards several ambitious space objectives, including:
      • Preparing for the Gaganyaan human spaceflight program
      • Enabling Chandrayaan-4 lunar sample return missions
      • Developing the Bharatiya Antariksh Station (BAS), India’s proposed space station35

    What is Space Docking?

    • Space docking refers to the process where two spacecraft in orbit rendezvous and physically connect to form a single entity. It is a highly complex and precise maneuver essential for advanced space missions.
    • Key Steps of Space Docking:
    1. Rendezvous: Involves bringing two spacecraft into the same orbit with minimal distance and velocity difference.
    2. Docking: Establishing a mechanical connection between the spacecraft using specialized docking systems.
    3. Power and Resource Sharing: Once docked, the spacecraft can transfer power, fuel, or crew to support joint operations.

     

    PYQ:

    [2018] “The experiment will employ a trio of spacecraft flying in formation in the shape of an equilateral triangle that has sides one million kilometres long, with lasers shining between the craft.” The experiment in question refers to-

    Options:

    (a) Voyager-2  (b) New Horizons (c) LISA Pathfinder (d) Evolved LISA

     

  • Innovations in Biotechnology and Medical Sciences

    Neurobiological basis of Substance Abuse Addiction

    Why in the News?

    A groundbreaking study at the University of British Columbia, published in Nature Mental Health, reveals that addiction involves a complex neural circuit regulating cravings, emotions, and decision-making, shifting approaches to treatment and recovery.

    Key Findings of the Research:

    • Addiction Alters a Network of Brain Regions:  A multi-center study analyzing 144 neuroimaging studies with 9,000 participants confirmed that addiction does not affect isolated brain areas but rather disrupts a circuit responsible for craving, emotional regulation, and decision-making.
    • Brain’s Reward System is Hijacked: The nucleus accumbens releases dopamine, reinforcing pleasurable behaviors. Addictive substances exploit this mechanism, making substance use compulsive over time.
    • Withdrawal Causes Emotional Distress: The extended amygdala triggers stress, anxiety, and irritability when substance use stops, driving continued consumption to avoid discomfort.
    • Decision-Making is Impaired: The prefrontal cortex weakens, reducing impulse control and rational thinking, making quitting extremely difficult despite awareness of harm.
    • Adolescents are More Vulnerable: Since the prefrontal cortex matures last, early substance exposure increases long-term addiction risk.
    • Neuroadaptations Persist Even After Abstinence: Brain changes caused by addiction do not immediately reverse, leading to relapse vulnerability even after long periods of sobriety.

    The Three-Stage Cycle of Addiction

    • Binge/Intoxication Stage (Basal Ganglia – Reward Processing)
      • Substance use triggers dopamine release, reinforcing pleasurable behaviors.
      • Over time, the brain associates substance use with intense rewards, increasing dependence.
      • Users experience cravings, leading to compulsive drug-seeking behavior.
    • Withdrawal/Negative Affect Stage (Extended Amygdala – Emotional Distress)
      • When substance use stops, individuals experience withdrawal symptoms like stress, anxiety, and depression.
      • The brain craves relief, pushing individuals toward continued substance use to avoid discomfort.
      • This stage makes quitting extremely difficult, reinforcing addiction.
    • Preoccupation/Anticipation Stage (Prefrontal Cortex – Impulse Control & Cravings)
      • The prefrontal cortex weakens, impairing decision-making and self-control.
      • Cravings dominate thoughts, leading to obsessive focus on substance use.
      • Despite knowing the negative consequences, individuals struggle to quit due to impaired cognitive function.

    This cycle continuously repeats, making addiction a self-reinforcing loop.

    PYQ:

    [2007] Which one of the following parts of the human brain is the regulating center for swallowing and vomiting?

    Options:

    (a) Cerebellum (b) Cerebrum (c) Medulla oblongata (d) Pons

     

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