Space.com

The pair will be closest to each other at around 8 p.m. ET.

The discovery that helium and iron can mix at the temperatures and pressures found at the center of Earth could settle a long-standing debate over how our planet formed.

Get the Celestron TrailSeeker 8x42 for their best price in over a year — a fantastic pair of binoculars for skywatching on the go.

Higher latitudes on the moon with slopes facing the poles "are not only scientifically interesting but also pose less technical challenges for exploration in comparison with regions closer to the poles of the moon."

We explore the celestial geometry that explains different kinds of eclipses of the sun and the moon.

The upper stage of SpaceX's huge Starship rocket exploded over the Atlantic Ocean this evening (March 6), creating a dramatic sky show for people in The Bahamas, Florida and elsewhere.

SpaceX managed to catch the Super Heavy booster on Starship's eighth test flight today (March 6), but the vehicle's upper stage was lost about nine minutes after liftoff.

AstroForge says there's no real hope of reestablishing contact with its Odin probe, the first private spacecraft ever to fly beyond the moon.