... Sometimes, it's fun to share the sky. ... NGC 4755: A Jewel Box of Stars . ... Meteors streaked through the sky above many of Earth's cities last week, but nobody was hurt, and no damage has been reported. ... Clearly, dark windblown sand surrounds outcropping of light sedimentary rock across the floor of crater Arabia Terra. ... Enthusiasts watched as comet dust rained on planet Earth, streaking through dark skies during the annual Perseid Meteor Shower. ... What could cause such rays of dark? ...