The innermost planet of our solar system is now well placed for observers.

The new observatory will allow astronomers to step through space and time like never before — these videos give us a taste of how.

Sweeping views of nebulae and dancing galaxies prove the telescope’s enormous field of view and ultra-high-res capabilities.

The crescent Moon lies in Taurus near the planet Uranus. You can easily spot the distant ice giant with binoculars or a small ...

Keenan’s System is a faint pair of interacting galaxies in Ursa Major, joined by a 22,000-light-year bridge of glowing material.

Venus and the Moon lie 5° apart in the predawn sky, offering a lovely naked-eye spectacle for early risers. The Moon passes ...

Today in the history of astronomy, a landmark institution in navigation, timekeeping, and astronomy is created.

Eta Cassiopeiae is a famous double star with contrasting colors. You can find it in the W-shaped constellation of the Queen ...

Today in the history of astronomy, celebrations at Stonehenge mark the summer solstice.

Serpens the Serpent is unique among the constellations because it’s separated into two parts with Ophiuchus the ...

Today marks the start of Northern Hemisphere summer, and also offers a chance to view night-glowing clouds if you’re lucky.

#2. The Moon came from Earth. It didn’t form beside our planet, and Earth’s gravity didn’t capture it. The latest theory says ...