4M watch mins. Gravitational lensing is useful to cosmologists because it is directly sensitive to the amount and distribution of dark matter. It is a powerful telescope to search for dark matter. Among major sections of UPSC 2020 Prelims, General Science and Technology is one. From UPSC perspective, the following things are important : Prelims level : Dark Matter, Gravitational Lensing. Taking the theory forward, in 1970s, two astronomers showed that the stars in Andromeda Galaxy were moving so fast that for the stars to stay in the galaxy there had to be a tremendous amount of matter surrounding and enveloping the entire galaxy like a giant cocoon. Lensing can help astronomers work out exactly how much dark matter there is in the Universe as a whole and also how it is distributed. It is buried deep in the ice. This extra matter which invisible and undetected has … Continue reading "DARK MATTER" Free classes & tests. Mains level : Gravitational Lensing. Lensing has also been used to help verify the existence of dark matter itself. Fifth state of matter observed by the scientists for the first time in space. Part of: GS-Prelims and GS-III – Science and Technology In News: The fifth state of matter has been observed by the scientists for the first time in space. UPSC CSE - GS. 2. The quantity of matter needed to exert such a pull far exceed the observed matter. IceCube searches for neutrinos from … Rakesh Verma. Discussions will be held on Dark Matter of the universe. English Science & Technology. The IceCube telescope is a powerful tool to search for dark matter and could reveal the physical processes associated with the enigmatic origin of the highest energy particles in nature. IceCube is an enormous particle detector located deep in the ice at the South Pole. It was in 1930s when Fritz Zwicky observed that many galaxies were moving faster than theoretical calculations. There are several theories regarding Dark Matter. Nov 3, 2020 • 1h 38m . Dark Matter and Galaxy Formation. Using NASA’s James Webb Space Telescope as a sort of time machine, researchers plan to investigate how new stars are born. Quick Discussion on Dark Matter and Dark Energy. This invisible extra matter was called Dark Matter. There is no specified syllabus for General Science and Technology, but, from the previous years’ papers, the probable boundary of the syllabus of this section can be drawn.This section is divided into 6 subsections i.e. ; A team of NASA Scientists recently unveiled the first results from Bose-Einstein condensates (BEC) experiments aboard the International Space Station (ISS). Here’s my rule of thumb for physics: the longer an idea is around, the more our ability to explain it in simple language increases. 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