tinelmis I. What is Lyman-alpha Forest? The Lyman-alpha forest is a term used in astrophysics to describe a series of absorption lines in the spectra of distant quasars. These absorption lines are caused by neutral hydrogen gas in the intergalactic medium that lies between the quasar and Earth. The Lyman-alpha forest is named after the Lyman-alpha … Read more
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I. What are The Voyager Golden Records? The Voyager Golden Records are a pair of phonograph records that were launched into space aboard the Voyager 1 and Voyager 2 spacecraft in 1977. The records were intended to communicate a message from Earth to any extraterrestrial civilizations that may encounter the spacecraft in the distant future. … Read more
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I. What is the Space Shuttle Main Engine (SSME)? The Space Shuttle Main Engine (SSME) is a liquid-fueled rocket engine that was used on NASA’s Space Shuttle program. It was developed by Rocketdyne and was designed to provide the thrust needed to launch the Space Shuttle into orbit. The SSME was a crucial component of … Read more
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I. What are Novae? Novae are astronomical events that occur in binary star systems, where one star is a white dwarf and the other is a companion star. When the white dwarf accretes material from its companion star, it can undergo a thermonuclear explosion on its surface, resulting in a sudden increase in brightness that … Read more