The Leonid meteor shower has been active all month, but it will be at its strongest Saturday and Sunday nights, according to ...

The real question, and still an open one, is whether a Taurid swarm could deliver more Tunguska-sized objects than would ...

This “farthest away” point is known as the planet’s greatest elongation. Since Mercury is in the evening sky, it is east of ...

The crowds watched the canyon keenly, peering through zoom lenses and binoculars and eyeglasses. The ancient layers had ...