Ailsa Harvey

The luminous arms of the M99 galaxy were pictured during two Hubble observations.

ESO released this uniquely colorized image of the NGC 3627 galaxy

As the sun made its descent beyond Atacama Desert’s horizon, it shared the limelight with the moon.

You can now add the deepest infrared image of the universe to your wardrobe.

These giant, terrestrial structures serve as our planet’s eyes, peering deep into space.

Facts about NASA's Artemis program, which aims to send astronauts back to the moon and one step closer to Mars.

Sirius has been the shiniest star in the sky for a long, long time.

Science says time travel is possible, but probably not in the way you’re thinking.

Here are 10 exoplanets regarded as the most Earth-like alien worlds discovered to date.

Some space conspiracy theories just won't go away.