Andromeda galaxy photos, 2021

Enjoy a photo gallery of the best Andromeda Galaxy images from EarthSky readers! The Andromeda Galaxy is a great observing target on fall evenings.

Heads up! Famous comet 67P/C-G nearly closest

Famous comet 67P/C-G will sweep closest to Earth in November. Finder charts help you locate this comet before it leaves for another 193 years.

Watch the Progress 79 cargo launch October 27

On October 27, 2021, Russia’s uncrewed Progress 79 cargo craft will launch from the Baikonur Cosmodrome in Kazakhstan. Here’s how to watch.

See 42 of the largest asteroids in new images

Astronomers with the European Southern Observatory (ESO) have obtained new and more detailed images of 42 of the largest asteroids in the main asteroid belt.

Small galaxy consumes an even smaller galaxy

Scientists found evidence that a small galaxy - the Large Magellanic Cloud, a satellite of the Milky Way - has eaten an even smaller galaxy.

White dwarf star abruptly switches on and off

Astronomers have witnessed a white dwarf switching on and off - or going from a bright to dim stage and back - over a period of just 30 minutes.

October deep sky: Nebulae and more

The October deep sky holds gems such as the Helix Nebula in Aquarius. You can spot the Helix Nebula in binoculars or a telescope on October evenings.

Moon-forming disk around super-Jupiter exoplanet?

Astronomers say that there may be moons being created in a moon-forming disk of dust around a giant super-Jupiter planet (or brown dwarf) 500 light-years away.

Earth in a tunnel? Decades-old mystery unfolds

A new astrophysical model connects local structures in our neighborhood of the Milky Way and depicts Earth in a tunnel in space.

Solar system’s future seen: 1st planet around a white dwarf

Scientists got a peek at the solar system's future when they found a gas giant planet orbiting a white dwarf. One day the sun will die and become a white dwarf.