Perseid Meteor Shower: The Perseid meteor shower is caused by the Earth traveling through the tail of comet Swift-Tuttle. The ...

Summer's most dazzling meteor shower, the Perseids, peaks this week. At the same time, Venus and Jupiter will converge in the ...

Early risers can observe a rare planetary conjunction of Venus and Jupiter, visible without telescopes, in the dawn sky over the next few mornings.