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– Universe Universe News NASA's Hubble Telescope Sees Farthest Galaxy Ever Seen NASA’s Hubble Space Telescope has spotted the farthest galaxy ever seen, stretching back to within a few hundred million years of the Big Bang. The galaxy is so far away, its light has taken 13.2 billion years to reach our telescopes — about 750 million years after the Big Bang. The Discovery of the First Exoplanet Around a Sun-Like Star In 1995, a group of astronomers from the Geneva Observatory announced the discovery of the first exoplanet around a sun-like star. The planet, 51 Pegasi b, orbits the star 51 Pegasi in the constellation Pegasus, located about 50 light-years from Earth. NASA’s Chandra Telescope Shows Vast Halo of Hot Gas Around Milky Way NASA’s Chandra X-ray Observatory has discovered a vast halo of hot gas that extends hundreds of thousands of light-years above and below the plane of the Milky Way. The halo is made up of particles that were heated to millions of degrees by supernovae explosions and other energetic events. Videos The Universe: From the Big Bang to Now This video takes a look
If the universe consisted of only Mercury and the sun, Mercury's trajectory would trace the same ellipse over and over again. However, there are seven other planets in the solar system (not to mention the dwarf planets), and these planets tug and nudge the orbit of Mercury ever so slightly. (For what it's worth, similar…