Asteroids and Meteors!

First there was the giant asteroid headed toward earth.  OK, so it was a few thousand miles out, but still.... And then a fiery meteor unexpectedly tore through the Russian sky and injured hundreds of people and caused a great deal of damage. But reading about these celestial happenings is a much safer (and less scary) way to go, so here are a few titles about threats from outer space that haven't really happened ---yet.

Falling Stars by Michael Flynn
With several large space rocks slated to hit Earth in the near future, ships are sent to the asteroid belt to prevent disaster, while a world financial crash and political turmoil threaten the rescue mission.

Impact by Douglas Preston
When a brilliant meteor lights up the Maine coast, and NASA images reveal an unnatural feature hidden in the depths of a crater on Mars, it's just the start of the adventure for a former CIA operative, technicians, and many others.

The Blessing Stone by Barbara Wood
Follows the story of a blue crystal that fell to the Earth and journeyed throughout human history in the hands of several owners, from a young girl who first discovers it on the African plain, to its bearers in nineteenth-century America.

The Precipice by Ben Bova
With Earth on the verge of total environmental disaster, Dan Randolph and two female astronauts embark on a mission to the asteroid belt in a last ditch quest to salvage the future of all life on the planet.

Terraforming Earth by Jack Williamson
Clones of survivors of a catastrophic asteroid collision that had decimated Earth and made it uninhabitable for humans join forces with alien travelers to rebuild the planet's ecosphere so that humans and aliens alike can build new lives on Earth.