Two comets are going to reach their closest approach to Earth this week around the same time, and they promise to be spectacular. Comets are called C/2025 A4 (Lemmon), and C/2025 R2 (SWAN), according ...

In late April 2026, a long-period comet will swing through the inner solar system. It will likely be visible with binoculars, and there's a small chance it could be seen with the naked eye.