Earth

See the following -

Detecting Asteroids, Meteors Takes On New Urgency

Elizabeth Weise and Dan Vergano | USA Today | February 18, 2013

A meteor-mapping satellite is envisioned that could serve as a space sentry to detect future close encounters and allow scientists to better protect the planet. Read More »

Nasa Cannot Monitor Most Potentially Devastating Asteroids

Nick Collins | The Telegraph | February 13, 2013

Asteroid 2012 DA14 will not hit Earth when it whizzes past us on Friday - but we may not be so lucky in future, space experts fear. Read More »