A dark, rubble-strewn asteroid roughly a third of a mile wide is among the most closely studied objects in the solar system, ...
After a spacecraft spent years studying a near-Earth asteroid and brought a piece of it home, scientists were able to refine one of the more attention-grabbing numbers in planetary defense: the chance ...
The past 4.5 billion years have been an incredibly lonely period for the asteroid 101955 Bennu. A gigantic impact in the early days of the solar system smashed an ancient cosmic rock to pieces, ...