Alinda, measuring an impressive 2.6 miles in diameter, is making its closest approach to Earth in over a decade. At a ...

Alinda, measuring 2.6 miles wide, will be visible this weekend. Stargazers can spot it using basic equipment or watch a ...

"it's not completely unusual for asteroids to be near the Earth," Gallagher said. "Our moon is about a quarter million miles ...

Explore the major astronomical events of 2025, including meteor showers, Supermoons, New Moons, and Mercury's greatest ...