Comet Leonard has been captured by a sun-observing telescope. It last passed by Earth 80,000 years ago, and there’s only a few days left to see it before it disappears forever.

Comet Leonard, which last passed by Earth 80,000 years ago, has been dazzling the night sky before Christmas.

Comet Leonard, or C/2021, the brightest comet of 2021, made its closest approach to Earth – about 21 million miles away – on December 12, but will continue to be visible right through Christmas.

Santa Claus and his eight tiny reindeer won’t be the only shiny thing streaking through the Christmas week sky. Comet Leonard, or C/2021, the brightest comet of 2021, is visible this week. The ...