Small Bodies

Dirty snowballs, stars with hair, and omens of doom are all ways that comets have been described in the past, yet recent scientific discoveries have sparked debate over comet composition, a subject ...

Long considered to be harbingers of doom, mankind eventually figured out that comets were large objects made from frozen rock traveling through space. Those that come close enough to Earth and are ...

Imagine, if you will, a spherical cloud of objects, like a snowglobe after a vigorous shake. Now image that each individual particle of fake snow in the snowglobe was roughly one kilometer across, ...