When a planet's orbit brings it between Earth and a distant star, it's more than just a cosmic game of hide and seek. It's an ...

The University of Arizona has utilized state-of-the-art Magellan Adaptive Optics Xtreme technology to observe the PDS 70 ...

A team of astronomers claims to have sniffed out a “biosignature” in the atmosphere of a distant planet called K2-18b. But not everyone agrees that it signals life.

A newly discovered comet, called C/2025 F2 (SWAN), may have disintegrated. But the remnants are still visible.