3I/ATLAS is the third interstellar visitor ever to visit the solar system having been formed around a distant star. Tune in ...

In the bigger picture, "down" could be defined as being below the plane of the solar system, which is known as the ecliptic.

A camera aboard India’s Aditya-L1 spacecraft captured the Earth and moon. The spacecraft launched atop a PSLV rocket. Credit: ...

The James Webb Space Telescope captured a colorful portrait of a nearby stellar cradle, revealing a wealth of insights about ...

Auroras may be visible from Alaska to Colorado tonight as a speedy coronal mass ejection impacts Earth.

Watch plasma build up around SpaceX Starship during its atmospheric re-entry. Credit: SpaceX ...

A geomagnetic storm made the northern lights — the aurora borealis — visible as far south as Alabama and New Mexico Jan. 19.

Watch the live stream of Blue Origin's NS-38 mission as it carries six passengers to the edge of space from West Texas. Follow the countdown and witness the historic suborbital flight of the New ...

Optical proof of a tiny companion orbiting supergiant star Betelgeuse is hard to come by. Hubble just spotted new evidence.

Perhaps a fire in the sky will warm things up as wind-chill-lowered temps head below zero in much of Pennsylvania, beginning ...

An alien comet is slipping away forever. For a few hours only, a livestream will show its final cosmic goodbye.

February brings several special events, including a rare "occultation," and a planetary parade of six planets.