...gregarious - they like to clump and cluster," said Bell, speaking Thursday at the national meeting of the American Astronomical Society. He said a simulation suggests that in about 7 billion years the Milky Way galaxy may merge with its nearest...

...theory Wednesday at the national meeting of the American Astronomical Society. Fossil records for the Ordovician extinction...about 65 million years ago. On the Net: American Astronomical Society: http://www.aas.org/

...observations Tuesday at the national meeting of the American Astronomical Society. "The star did an amazing thing," said...gigantic spasm of violence. On the Net: American Astronomical Society: www.aas.org

...surface if water had run over it or had rained on it. Clark presented the discovery at the annual meeting of American Astronomical Society Division of Planetary Sciences in Pasadena, Calif., on Friday. Clark and Hoefen could not be reached for...

...Chandra science team. Reports on studies by the Chandra were delivered Friday at the national meeting of the American Astronomical Society. Canizares said the Chandra shows that ring-like structures loaded with chemical elements were hurled out...

...easier time starting than we thought before," astronomer Sun Kwok said Wednesday at a national meeting of the American Astronomical Society. Kwok, of the University of Calgary, Canada, said a study by the Infrared Space Observatory showed that...

...good," Carlson said as he discussed his findings Wednesday, midway through the annual convention of the American Astronomical Society's Division of Planetary Sciences. A group of scientists from the University of Arizona presented an analysis...

...rings that may have been gravitationally sculpted by planets, astronomers said at the national meeting of the American Astronomical Society. The stars, identified as HR 4796A and HD 141569, are both about 300 light years from Earth. Each is twice...

...conditions," Bruce M. Jakosky, a University of Colorado planetary scientist, said at a meeting of the American Astronomical Society. "There is a remarkable change among scientists from just 20 years ago." In this solar system alone...

...century-old system of classifying stars based on their chemistry and temperature. J. Davy Kirkpatrick told the American Astronomical Society that he and his colleagues discovered that some objects have a surface temperature three times lower than...