Prelims Mantra – (01/12/2025)

Geography, Mapping, Ecology & Environment

Baikonur cosmodrome in Kazakhstan:

    • World’s oldest and largest operational space launch facility.
    • Located in Kazakhstan but leased and operated by Russia till 2050.
    • Site of iconic launches: Sputnik-1 (1957) and Yuri Gagarin (1961).
    • Located near the Baikonur city in southern Kazakhstan, on the steppes.
    • Major hub for Soyuz crewed missions to the ISS.
    • Symbol of Russia–Kazakhstan space cooperation.

 

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Aceh province:

    • Located on Sumatra Island, Indonesia’s westernmost province.
    • Sits along Sunda Arc, highly prone to mega-earthquakes and tsunamis (2004 Indian Ocean tsunami epicentre).
    • Culturally distinct: Only Indonesian province allowed to implement Sharia law.
    • Part of Strait of Malacca strategic zone → important for maritime security, piracy, and trade.
    • Significant for India’s Act East and Indo-Pacific outreach due to proximity to Andaman–Nicobar.

 

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Great Nicobar Crake:

    • Scientific Name: Rallina sp. (recently described, endemic to Great Nicobar Island).
    • Status: Newly discovered/recorded species → significance for biodiversity mapping in Andaman & Nicobar.
    • Habitat: Tropical rainforests, wetlands and understorey vegetation of Great Nicobar Island.
    • Endemism: Strictly endemic to Great Nicobar (part of a global biodiversity hotspot).
    • Conservation Concern:
      • Located in an ecologically sensitive region prone to tsunamis, earthquakes, cyclones.
      • The island is under pressure from infrastructure and developmental projects.
    • Ecological Role: Indicator of healthy wetland & forest ecosystems.

 

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World Summit on Disaster Management, at Dehradun:

    • The government is significantly strengthening disaster-forecasting and resilience infrastructure in Uttarakhand.
    • Already three weather radars (at Surkanda Devi, Mukteshwar and Lansdowne) have been installed; three more radars at Haridwar, Pantnagar and Auli will soon be commissioned.
    • Overall network expansion includes 33 meteorological observatories, 142 automatic weather stations (AWS), rain-gauges and district/block level rainfall monitoring aimed at improving early-warning and real-time forecasting.
    • A specialised Himalayan climate-study programme has been launched to understand triggers of sudden events like cloudbursts / flash floods; the “Nowcast” 3-hour forecasting system is being expanded to this Himalayan region.
    • It emphasised the increasing risks in the region — due to retreating glaciers, glacier-lake outburst risks, fragile Himalayan ecology, deforestation, and man-made encroachments — leading to frequent cloudbursts and flash floods.
    • There is also a push to convert Himalayan vulnerabilities into opportunities: promoting agri-startups and science-led value-addition models via CSIR to boost livelihoods in mountain regions.
    • The government frames disaster preparedness and climate adaptation not only as humanitarian necessity, but as critical for sustainable economic growth and resilience — aligning with broader climate commitments.

 

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Science & Technology

Butterfly Nebula (NGC 6302):

    • It is a bipolar planetary nebula located in the constellation Scorpius, ~3,800 light-years from Earth.
    • Formed from the ejected outer layers of a dying Sun-like star; shows a distinct two-lobed “butterfly-wing” structure.
    • Contains one of the hottest central stars known, with surface temperatures estimated around 220,000–250,000°C.
    • The bipolar shape is caused by fast stellar winds interacting with a dense equatorial dust torus, restricting outflow to the poles.
    • Observed in detail by Hubble Space Telescope and James Webb Space Telescope (JWST), giving insights into late stellar evolution.

 

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