Skywatchers can look forward to an extraordinary year as 2026 brings a steady lineup of rare planetary alignments, striking ...

Over the years, passing spacecraft have observed mystifying weather patterns at the poles of Jupiter and Saturn. The two ...

One of the most stubborn issues in cosmology today concerns the universe's rate of expansion. Scientists know it's expanding, ...

The Artemis II mission will set several notable human spaceflight records. Astronauts Reid Wiseman, Victor Glover, Christina ...

The supposed "strange signals" were not mysterious at all, but commonly observed transit signals, according to NASA.

Planetary rings explained: composition, formation theories, and a comparison of Saturn, Jupiter, Uranus, and Neptune’s rings.

A decade of observations of four planets around the young planetary system V1298 Tau revealed a rare, long-sought missing ...

NASA's giant Artemis Two rocket is now on the launch pad at Cape Canaveral. The 322-foot rocket was rolled out to Launch Pad ...

The James Webb telescope's search for habitable exoplanets is getting a big boost from its new star-watching companion, ...

Unfortunately for planet hunters, Mercury, Venus and Mars are all too close to the sun to observe; they will come out of the ...

Using the Hubble Space Telescope, astronomers have witnessed an infant star 20 times larger than the sun setting interstellar ...

As they fly around the moon, the four astronauts of NASA's Artemis II will see views never seen by the human eye. Here's how.