Another view on asteroid research, by the BBC Science Correspondent Jonathan Amos:

A joint UK-US-led expedition has got under way to drill into the Chicxulub Crater off the coast of Mexico.

This is the deep scar made in the Earth's surface 66 million years ago by the asteroid that scientists believe hastened the end of the dinosaurs.

http://www.bbc.com/news/science-environment-35950946