Science News
Asteroid 1995 BJ4 Grows a Tail and May Be a Record Comet
Asteroid 1995 BJ4 in the main belt has grown a tail, and astronomers are debating whether it is a record-size comet or the result of a collision.
comet
Night Sky
Star of Bethlehem: Four Astronomical Explanations Compared
No sky event is confirmed as the Star of Bethlehem. Astronomers have proposed planet conjunctions, a comet or a nova, and each fits only part of the story.
Science News
Comet 11P Reaches the Sun Nov. 9, Passes Earth Nov. 11
Comet 11P/Tempel-Swift-LINEAR reaches perihelion Nov. 9 and its closest Earth approach Nov. 11. Here is what to expect and what telescope it needs.