  |
Smash!
In July 2005, scientists smashed a probe into a comet. The crash gave scientists their first peek inside a comet.
|
|
|
|
Blaze of Glory
As they heat up, comets develop two tails. The tails can be millions of miles long.
|
|
|
|
Picture-Perfect
Comet Hale-Bopp is very bright. When it comes near Earth, people see it without a telescope.
|
 |
