Binary planetesimals
Friday, January 28, 2011 - 14:00
in Astronomy & Space
(PhysOrg.com) -- In fewer than ten million years, the material in the disk around a young star will either be accreted on to its star, dispersed into the interstellar medium, or converted into planets or smaller solid bodies. As the material in the disk orbits the star, each particle has a velocity that depends on its distance from the star.