The brightest comet to whiz past Earth in 2021 has likely disintegrated. Comet Leonard is now nothing but a ghostly streak, having lost its nucleus, or main body, and its coma, or temporary atmosphere ...

Comet Leonard, which last passed by Earth 80,000 years ago, has been dazzling the night sky before Christmas, and there's only a few days left to see the celestial object before it disappears forever.

Remember Comet Leonard? It became a fine binocular object late last year through early January, especially for southern hemisphere skywatchers. When brightest, it reached third magnitude and grew a ...

A spacecraft intended to study the boiling atmosphere of the sun has completed additional tasks by passing through the tail of the comet C/2021 A1 Leonard. Comet Leonard, as it is known, made ...