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Source of Ancient Chinese supernova Located by Chandra.
January 11, 2001
Source of Ancient Chinese supernova Located by Chandra
Andromeda's Disc is Warped
Ariane Rocket Launches Turkish Satellite
SOURCE OF ANCIENT CHINESE supernova LOCATED BY CHANDRA
In the spring of 386 AD, Chinese star watchers spotted a new object in the constellation they knew as "The Southern Dipper", what we call Sagittarius. That "guest star" faded after three months and was lost from sight, but not from history. Now, evidence from the Chandra X-ray Observatory proves that this supernova produced a pulsar which shines brightly in the X-ray band. Astronomers from Canada, Japan and the U.S. released this evidence at the winter meeting of the American Astronomical Society convened this week.
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ANDROMEDA'S DISC IS WARPED
Astronomers at the University of California have gathered evidence that the Andromeda Galaxy (known as M31) has an extreme warp in its stellar disc. Many galaxies, including the Milky Way, have been found with warps, but they're difficult to detect. M31 is a good candidate, because it's close, and inclined at an angle that allows Astronomers to detect the warp.
ARIANE ROCKET LAUNCHES TURKISH SATELLITE
After a series of delays, an Ariane 44P rocket finally launched a Turkish Eurasiasat 1 satellite yesterday at 2209 GMT (5:09pm EST) from the Guiana Space Center. The launch was delayed last year due to technical concerns about the rocket's nose cone and satellite cargo, and was delayed earlier this week because of high winds at the launch site. The rocket successfully placed the satellite into a looping orbit - controllers will now guide it into a final geosynchronous orbit directly above Somalia.
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