The newly discovered comet, C/2025 F2 (SWAN), is racing toward the Sun, and it may not survive its closest approach.

Initial observations suggest the comet, called C/2025 F2 (SWAN), will continue getting brighter as it approaches the sun.

The “comet of the century” that was likely last seen by the Neanderthals seemed to develop a physics-defying second tail as it reached its closest point to Earth in over 80,000 years.

Observations of Exoplanet WASP-69b has uncovered a 350,000-mile-long comet-like tail. The tail is a result of its escaping atmosphere. Credit: Space.com | animation: W. M. Keck Observatory/Adam Makare ...

In Millour's photo, you can see that tail blowing out, away from the sun just after sunset, from the comet's head (called the nucleus) on the horizon. The solar wind also blows ions of the comet ...