Photos show that comet C/2025 F2 (SWAN) experienced a "major eruption," causing it to become temporarily brighter. However, ...

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

that ice sublimates into a gas as it nears the sun to create a vast, willowy tail. In Millour's photo, you can see that tail blowing out, away from the sun just after sunset, from the comet's head ...