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Event Horizon of the black hole.
Oct 30, 2003 Astronomers from the European Southern Observatory recently spotted a flare in the Infrared spectrum as matter was consumed by the supermassive black hole at the centre of the Milky Way. They calculated that the flare, which only lasted for a few minutes, happened only a few thousandths of an arc second away from the centre of the Milky Way - this corresponds to the Event horizon of the black hole. This observation allowed the Astronomers to measure that the black hole is spinning very rapidly.
Oct 30, 2003 Just when we thought it was over, the Sun blasted another gigantic X-class flare directly at the Earth. The flare was detected by the GOES satellite on October 29 at 2037 GMT (3:37 pm EST), and it peaked about 10 minutes later. The solar storm from this flare should reach us in a little less than a day, and cause another round of communication disruptions and beautiful auroras. The timing of two X-class flares happening this close together, and aimed directly at the Earth is unprecedented in solar astronomy.
Oct 30, 2003 The Hubble Space Telescope was recently used to peer into a star forming region that's a million times more active than the Orion Nebula. The Lynx Arc contains a million blue-white stars (the Orion Nebula has four) which are twice as hot as similar stars in our own Milky Way galaxy; but this cluster is located 12 billion light-years away, and seen when the universe was only 2 billion years old. This discovery will help Astronomers understand how some of the first stars formed shortly after the Big Bang.
Oct 30, 2003 It started as the largest flare ever seen by the SOHO spacecraft, and only 19 hours later, the associated solar storm reached the Earth. The storm arrived as a G-5, the largest they get on the NOAA space weather scale. There was little disruption on Earth, however, with only some communications disrupted, and it appears that the Japanese might have lost contact with one of their satellites. Beautiful auroras were visible from many parts of the world, as far south in North America as Texas and Florida. People in Scotland reported that the aurora had already started when the Sun went down, and it was still going past midnight.
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