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 comet ...

Christmas week this year is being marked by a rare sight in the night sky. Comet Leonard, or C/2021, the brightest comet of 2021, made its closest approach to Earth – about 21 million miles away – on ...

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.

Scientists at the U.S. Naval Research Laboratory evaluate early data the ESA/NASA Solar Orbiter spacecraft sent back to Earth as it observes comet Leonard, a mass of space dust, rock and ice just over ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Comet Leonard appeared to pass between the Whale Galaxy ...

Comet Leonard as captured by NASA’s Solar Terrestrial Relations Observatory-A (STEREO) spacecraft, HI-2 telescope, which has watched the comet since early November. This animated “difference image” ...