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Photon Sphere

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Radio emission from the accretion disk surrounding the  supermassive black hole   M87*  (captured 2017, computed  2019 ) as imaged by the  Event Horizon Telescope . The photon sphere lies within the dark shadow (which has a radius of approximately 2.6 times the Schwarzschild radius. A Schwarschild radius is the distance from a Black hole's singularity (infinitely dense center of a black hole) to it's Event horizon (outermost part of a black hole). We know that light is influenced by the gravity. So when the photons come near the black holes, some of them fall into it, while some are not as close to the black hole so they are not consumed by it but their trajectory changes due to the immense gravity of the black hole. The third condition is utterly different, the photon as it comes near the black hole at a particular distance which is 3/2 or 1.5 Schwarschild radius, it literally starts to orbit the black hole.  Now, the equation below shows tha...
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About PUBG MOBILE

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PlayerUnknown's Battlegrounds  ( PUBG ) is an online multiplayer  battle royale game  developed and published by  PUBG Corporation , a  subsidiary  of South Korean video game company  Bluehole . The game is based on previous  mods  that were created by Brendan "PlayerUnknown" Greene for other games, inspired by the 2000 Japanese film  Battle Royale , and expanded into a standalone game under Greene's creative direction. In the game, up to one hundred players parachute onto an island and scavenge for weapons and equipment to kill others while avoiding getting killed themselves. The available safe area of the game's map decreases in size over time, directing surviving players into tighter areas to force encounters. The last player or team standing wins the round. PlayerUnknown's Battlegrounds Developer(s) PUBG Corporation [a] Publisher(s) PUBG Corporation PUBG Corporation (PC, PS4) Microsoft Studios  (Xbox One) Tencent Games  (mo...
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Fact study about MANGALYAAN Mars mission

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The Mars Orbiter Mission (MOM) or Mangalyaan, is a space probe launched by the Indian Space Research Organization on November 5, 2013.    Mangalyaan was India's first interplanetary mission. The indigenously-built space probe has been in the Martian orbit since September 24, 2014. The mission made India the first Asian country, and the fourth in the world after Roscosmos, NASA, and the European Space Agency, to get to the planet. China referred to India's successful Mangalyaan as the "Pride of Asia".   On November 23, 2008, the then-ISRO chairman G Madhavan Nair acknowledged Isro's Mars mission.  Prime Minister Manmohan Singh approved the project on August 3, 2012.   What was the objective of Mangalyaan?   India's Mangalyaan mission is aimed at studying Martian atmosphere. Its objective is to explore Martian surface features, mineralogy, morphology and atmosphere using indigenous scientific instruments. A crucial objective of MOM was to develop technologies...
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Fact study about VOYAGER PLANETARY

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                          FACT SHEET Fact Sheet The Voyager Planetary Mission The twin spacecraft Voyager 1 and Voyager 2 were launched by NASA in separate months in the summer of 1977 from Cape Canaveral, Florida. As originally designed, the Voyagers were to conduct closeup studies of Jupiter and Saturn, Saturn's rings, and the larger moons of the two planets. To accomplish their two-planet mission, the spacecraft were built to last five years. But as the mission went on, and with the successful achievement of all its objectives, the additional flybys of the two outermost giant planets, Uranus and Neptune, proved possible -- and irresistible to mission scientists and engineers at the Voyagers' home at the Jet Propulsion Laboratory in Pasadena, California. As the spacecraft flew across the solar system, remote-control reprogramming was used to endow the Voyagers with greater capabilities than they possessed whe...
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Lifestages of a butterfly#BloggingMafia

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Stage 1 - Egg A butterfly begins life as FERTILIZED EGG. A female butterfly lays a lot of egg usually on leaves or stems of butterfly eggs are very tiny and may be different shapes likespherical, oval or cylindrical. Stage 2 -  The second stage occurs when the egg hatches and gives rise to the butterfly larva. Stage 3 - The third stage is known as the pupa or chrysalis. The caterpillar attaches itself to a twig, a wall or some other support and the exoskeleton splits open to reveal the chrysalis. The chrysalis hangs down like a small sack until the transformation to butterfly is complete. Stage 4 - An adult butterfly is ready.
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