For the first time, orbiting satellites have observed and
measured a major tsunami event in open ocean, the Indian Ocean
tsunami that resulted from the magnitude 9 earthquake southwest of
Sumatra on December 26. The measurements are of tremendous value to
researchers worldwide and will aid our understanding of these
events.
Astronomers say a dusty disc swirling around the nearby star
Vega is bigger than earlier thought. It was probably caused by
collisions of objects, perhaps as big as the planet Pluto, up to
2,000 kilometers (about 1,200 miles) in diameter.
A swarm of 10,000 or more black holes may be orbiting the Milky
Way's supermassive black hole, according to new results from NASA's
Chandra X-ray Observatory. This may represent the highest
concentration of black holes anywhere in the Galaxy.
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