Beginning Monday afternoon, comet Lemmon will pass about 56 million miles from Earth, while comet Swan will soar even closer, ...

Astronomer Gianluca Masi and his Virtual Telescope Project will host a special livestream on Oct. 24 beginning at 1:30 p.m.

Unique to the Orionids, NASA notes, the meteors seen during this shower are particularly fast and bright. Furthermore, they ...

I/ATLAS puts the Planetary Defense Network on watch. NASA and ESA say no threat as IAWN drills tracking, while Harvard’s Avi Loeb raises an alien-origin idea.

NASA will announce the first class of astronauts in four years who could one day be eligible for missions to the moon and Mars.

See footage Orion Spacecraft, moon and Earth shortly before its "outbound powered flyby burn". Orion was less than 2000 miles ...

Liftoff is scheduled for 7:30 a.m. ET today (Sept. 24). SpaceX will launch NASA's ambitious IMAP mission and two other space ...

Unlike the Moon, which is gravitationally bound to our planet, 2025 PN7 shares an orbit around the Sun that closely mirrors ...