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Chandra Finds Wind Blowing Away From a Black Hole.


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Image credit: NASA
Chandra Finds Wind Blowing Away From a Black Hole

Jul 15, 2003 - A new image taken by the Chandra X-Ray Observatory shows gas and dust blowing away from a supermassive black hole at the heart of Galaxy NGC 1068 at 1.6 million kilometres/hour. The elongated shape of the gas plume is thought to be caused by a donut-shaped ring of cooler dust surrounding the black hole, which acts to focus material pouring away. Instruments on board Chandra have measured the gas plume and found that it's similar in composition to our own Sun and has a temperature of 100,000 degrees Celcius.

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Image credit: NASA
Measuring the Earth's Ozone Levels with Four Satellites

Jul 15, 2003 - A series of NASA satellites are measuring ozone levels in the Earth's atmosphere with such precision that they can tell where's it's naturally occurring and where it's caused by pollution. The satellites included NASA's Terra, Tropical Rainfall Measuring Mission, Earth Probe/TOMS, and the ESA's ERS-2 satellite, and they were able to record fires and lightning flashes around the world. scientists were surprised to find that larger quantities of ozone over the tropical Atlantic were actually formed by lightning strikes and not pollution as originally though.

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Image credit: ANU
Destroyed Australian Observatory to Be Rebuilt

Jul 14, 2003 - In early 2003 bushfires destroyed much of Australia's Stromlo Observatory, including five Telescopes and several support buildings. On Sunday, July 13, the Australian National University unveiled plans to rebuild the facilities on Mt Stromlo. In addition to building two new Telescopes (including a two-metre robotic telescope), the University will also reconstruct several heritage buildings destroyed in the fire.

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Image credit: ESO
New Galaxy Clusters Discovered

Jul 14, 2003 - A team of European and Chilean Astronomers have discovered several large clusters of Galaxies at a distance of 8 billion light years which should provide insights into the structure and evolution of the Universe. The Galaxy clusters were discovered by combining images from the ESA's XMM-Newton space telescope and the ESO's Very Large Telescope. Galaxy clusters aren't spread evenly, but appear strung through the universe like a web, and so far it seems like the shape of these clusters hasn't changed since the universe was very young..

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