From San Diego, at a meeting of the American Astronomical Society
New observations of one of the sun’s brightest neighboring stars show that the debris disk surrounding it contains much fine dust, probably from recent collisions between massive objects near the star.
Using the orbiting Spitzer Infrared Observatory, Kate Y.L. Su of the University of Arizona in Tucson and her colleagues found evidence for huge amounts of microscopic dust around the star, named Vega.