Our universe might be chock-full of cosmic wonder, but you can observe only a fraction of astronomical phenomena with your naked eye. Meteor showers, natural fireworks that streak brightly across the night sky, are one of them. The latest observable meteor shower will be the Eta Aquarids, which has been active since April 19 and…
Two canyons near the south pole of the moon rival the Grand Canyon, both in depth and length. Unlike the sinuous chasm in Arizona, the two lunar canyons, known as Vallis Schrödinger and Vallis Planck, are straight, as if the crust of the moon had been cut by a knife. And unlike the Grand Canyon,…
A couple in Canada were returning home from walking their dogs some months ago when they found a burst of dusty debris on their walkway. They turned to their security-camera footage for answers and found it showed a mysterious puff of smoke appearing on the tidy walkway where the mystery splotch was. The source of…