UPSC -GEOGRAPHY


 

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science and technology

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 space science.     isro____=> orbit- an elangated path  types of orbits      Geostationary orbit (GEO)- Satellites in geostationary orbit (GEO) circle Earth above the equator from west to east following Earth’s rotation Low Earth orbit (LEO) Medium Earth orbit (MEO) Polar orbit and Sun-synchronous orbit (SSO) Transfer orbits and geostationary transfer orbit (GTO) Lagrange points (L-points)
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NASA'S SOFIA(Stratospheric Observatory for Infrared Astronomy)

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  Stratospheric Observatory for Infrared Astronomy -SOFIA he Flying Observatory  SOFIA soars over the snow-covered Sierra Nevada mountains with its telescope door open during a test flight. SOFIA is a modified Boeing 747SP aircraft. Credits: NASA/Jim Ross SOFIA, t he Stratospheric Observatory for Infrared Astronomy, is a Boeing 747SP aircraft modified to carry a 2.7-meter (106-inch) reflecting telescope (with an effective diameter of 2.5 meters or 100 inches). Flying into the stratosphere at 38,000-45,000 feet puts SOFIA above 99 percent of Earth’s infrared-blocking atmosphere, allowing astronomers to study the solar system and beyond in ways that are not possible with ground-based telescope s. SOFIA is made possible through a partnership between NASA and the German Space Agency at DLR. The observatory’s mobility allows researchers to observe from almost anywhere in the world, and enables studies of transient events that often take place over oceans where there are no telescopes. Fo
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UPSC -TAIWAN IN NEWS WHY.?

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  Taiwan Strait The Taiwan Strait is a 180km-wide strait separating continental Asia and the island of  Taiwan . A strait is a narrow water passage connecting two larger bodies of water, usually two seas. Straits can be formed naturally by  tectonic plate movements  or created by humans (called canals like the Suez Canal). While most straits are navigable, some are too narrow or shallow to allow safe movement of vessels. Also referred to as the Formosa (“Beautiful”) Strait, the Taiwan Strait extends from the South China Sea in the southwest to the East China Sea in the northeast. It runs between the coast of the Fujian (Fukien) Province and the island of Taiwan. the Taiwan Strait is relatively shallow. It has an average depth of about 490ft, and a minimum depth of 82ft. Several rivers including the Jiulong and Min rivers from China’s Fujian Province drain into the Taiwan Strait.   370 million tons of sediments are deposited annually by the rivers of Taiwan draining into the Taiwan S
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