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DARK MATTER

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                                                             DARK MATTER BY-SANKET KUMAR SAHU BRAHMAPUR,ODISHA Dark matter , a component of the   universe   whose presence is discerned from its   gravitational   attraction rather than its luminosity. Dark matter makes up 30.1 percent of the   matter -energy   composition   of the universe; the rest is   dark energy   (69.4 percent) and “ordinary” visible matter (0.5 percent). Originally known as the “missing mass,” dark matter’s existence was first inferred by Swiss American astronomer   Fritz Zwicky , who in 1933 discovered that the mass of all the   stars   in the   Coma cluster of   galaxies   provided only about 1 percent of the mass needed to keep the galaxies from escaping the cluster’s gr...
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PINE GAP - AUSTRALIA

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                                                         PINE GAP - AUSTRALIA BY-SANKET KUMAR SAHU BRAHMAPUR,ODISHA Pine Gap  is the commonly used name for a U.S. satellite surveillance base or Australian Earth station approximately 18 kilometres (11 mi) south-west of the town of Alice Springs, Northern Territory in the centre of Australia which is operated by both Australia and the United States. Since 1988, it has been officially called the  Joint Defence Facility Pine Gap  (JDFPG); previously, it was misleadingly known as  Joint Defence Space Research Facility . Partly run by the U.S. Central Intelligence Agency (CIA), U.S. National Security Agency (NSA) and U.S. National Reconnaissance Office(NRO), the station is a key contributor to the NSA's global int...
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