The moon is a permanent feature in our skies, but is it as unchanging as it seems?
This isn't an urgent call to arms, but it's a future date to consider. In 172 years time there's the possibility that we might be hit by an asteroid with potential to cause some significant global turmoil.
The massive pock in southwestern Egypt was created no more than a few thousand years ago.
Going against the recommendations of not using nuclear explosions to destroy a doomsday asteroid, a physicist has turned the "softly, softly" approach on its head.
A huge quantity of water has been discovered in craters at the north lunar pole, enough water to supply a large US city for three years. Also, there also appears to be evidence for a lunar "hydrosphere".
A 30-year-old theory about the demise of the dinosaurs gets affirmation from a team of scientists.
We may not be prospecting Mars anytime soon, but scientists have mapped out where on the planet we should look -- some day.