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

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

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 ...

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

Earth’s companion has allowed astronomers to define lunar cycles, navigate without technology, and understand celestial ...

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

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

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

Summer arrives for northern observers as the Moon visits Venus, Uranus, and Mercury. Plus: globular cluster M15, double star ...

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

The summer solstice occurs this year on Friday, June 20, at 10:42 P.M. EDT. After the June solstice, days will get shorter ...