This skywatching quiz will test your knowledge of how eclipses, when to see them, and what makes each one so spectacular.

In this curious film, a pair of friends venture out into the desert to build an accurate to scale model of our solar system.

The sun is in its most active phase—solar summer—causing auroras and posing real risks to satellites, GPS, and power systems ...

Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.