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Two Comets to Light Up the Night Sky

EarthMonday, October 20, 2025
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Comet Lemmon and Comet Swan are making their way towards Earth, offering a unique opportunity for skywatchers to witness these rare celestial events.

A Celestial Show

  • Comet Swan will come within about 24 million miles of Earth.
  • Comet Lemmon is a bit farther out, at around 56 million miles.
  • Both comets are expected to be at their brightest between Monday and Tuesday.

How to Watch

If you don't have your own telescope, you can watch the event live:

  • Virtual Telescope Project and Astronomer Gianluca Masi are live streaming the event.
  • Start time: 1:30 p.m. on Monday.
  • Where to watch: Their website or YouTube channel.

About Comet Lemmon

  • First spotted: January
  • Visibility: Western evening sky after sunset
  • Composition: Ice, dust, and gas
  • Bright tails: Created as the comets heat up and release gas and dust.

A Reminder of Our Universe

Seeing comets like these is a reminder of how vast and mysterious our universe is. It's a chance to step outside, look up, and appreciate the wonders of the night sky.

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