They also concluded that it probably came from a system with a relatively hot, high mass star since such a system would have a greater number of rocky objects closer in. (sciencedaily.com)
Astronomers infer the presence of small rocky objects that give rise to such planets by detecting warm disks of dusty particles girdling young stars. (sciencemag.org)
The millions of rocky objects orbiting between Mars and Jupiter probably collide all the time, but this is the first instance in which astronomers have seen direct evidence of an impact. (discovermagazine.com)