Many parents are fearful about their children being online. Messaging services for children could help both kids and parents learn how to communicate safely and respectfully in the digital space.
Everything in space is so far away, but probes bring us closer.
It was the first probe to find water on Mercury, the planet closest to the sun. Its mission nearly over, MESSENGER is about to crash into the planet it's been observing.
Who gets to name the craters and features on our planets was once an ad hoc affair. But now the public can have a say with just days left to vote.