India has been traditionally vulnerable to natural disasters on account of its geo-climatic conditions. Floods, droughts, cyclones, earthquakes and landslides have been recurrent phenomena. About 60% of the landmass is prone to earthquakes of various intensities; over 40 million hectares is prone to floods; close to 5,700 km long coastline out of the 7,516 km, is prone to cyclones; about 68% of the cultivable area is susceptible to drought. The Andaman & Nicobar Islands, the East and part of West coast are vulnerable to Tsunami. The deciduous/ dry-deciduous forests in different parts of the country experience forest fires. The Himalayan region and the Western Ghats are prone to landslides. Satellite images showing the damages at Kedarnath village caused by the flash floods in June 2013 Under the DMS programme, the services emanating from aerospace infrastructure, set up by ISRO, are op...
A radio signal originating from atomic hydrogen in an extremely distant galaxy was detected by the Giant Metrewave Radio Telescope (GMRT) located in Pune. This is the largest astronomical distance over which such a signal has been picked up. The findings have been published in the scientific journal Monthly Notices of the Royal Astronomical Society . Astronomers from McGill University in Canada and the Indian Institute of Science (IISc) in Bengaluru have used data from the telescope to detect atomic hydrogen. GMRT is a low-frequency radio telescope that helps investigate various radio astrophysical problems ranging from nearby solar systems to the edge of the observable universe. Atomic hydrogen is the basic fuel required for star formation in a galaxy. When hot ionised gas from the surrounding medium of a galaxy falls onto the universe, the gas cools and forms atomic hydrogen. This then becomes molecular hydrogen and eventually leads to the formation of stars....
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