You are requesting that your library account password be reset. After you submit this request, we will email you a link that you can use to set a new password for your account.
In order for this to be successful, you must provide either a valid library card number or a valid library username, and we must have a valid email address on file for your account.
"Asteroids come in all shapes and sizes--and hit our planet in them, too. But what happens if a catastrophically large one approaches earth? By looking on the ground at historical asteroid craters and present-day falls, and up into space for the b...
Read more
Contents
An asteroid strikes -- Clues on the ground -- Blast from the past -- The death of the dinos -- Asteroid hunt! -- The search from space -- How to stop an asteroid from smashing into Earth -- What you can do! -- Learn more about asteroids and meteorites.