Space for Prelims

Network for Space Objects Tracking and Analysis (NETRA) project – UPSC Prelims

Network for Space Objects Tracking and Analysis (NETRA) project: Project NETRA is an initiative by ISRO which is an early warning system in space to detect debris and hazards to the Indian satellites. Under this project, ISRO plans to put up many observational facilities like telescopes, connected radars, data processing units, and a control centre. …

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Solar Jets or Spicules – UPSC Prelims

Solar Jets or Spicules: Solar plasma jets, or spicules, are powerful plasma streams constantly ejecting from the Sun’s chromosphere (an atmospheric layer above the Sun’s visible surface). Solar jets, or spicules, appear as thin grass-like plasma structures that constantly shoot up from the surface and are then brought down by gravity. These jets rise and fall back under …

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Giant Metrewave Radio Telescope – UPSC Prelims

Giant Metrewave Radio Telescope (GMRT): Giant Metrewave Radio Telescope (GMRT) is an array of thirty fully steerable parabolic radio telescopes. It is located in Narayangaon, near Pune in India. It is an indigenous project. It is operated by the National Centre for Radio Astrophysics of the Tata Institute of Fundamental Research. It functions at the …

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Geomagnetic Storm – UPSC Prelims

What is a Geomagnetic Storm? A geomagnetic storm is a major disturbance of Earth’s magnetosphere that occurs when there is a very efficient exchange of energy from the solar wind into the space environment surrounding Earth. Solar Storms occur during the release of magnetic energy associated with sunspots and can last for a few minutes or hours. The magnetosphere shields our home planet from …

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Starlink Project – UPSC Prelims

Starlink Project: Starlink is a SpaceX project to build a broadband network with a cluster of orbiting spacecraft that could eventually number thousands. The Starlink satellites carry Hall thrusters, which use electricity and krypton gas to generate an impulse, to manoeuvre in orbit, maintain altitude and guide the spacecraft back into the atmosphere at the end of their …

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EOS-04 Satellite – UPSC Prelims

EOS-04 satellite: EOS-04 is a radar-imaging satellite, designed to provide high-quality images under all weather conditions for applications such as agriculture, forestry & plantations, soil moisture and hydrology, and flood mapping. The EOS-04 satellite would be placed in a sun-synchronous polar orbit.