Compound, or catadioptric, telescopes combine lenses and mirrors for a compact option, suitable for both planetary and ...

Coldplay brought the crowd to their feet, with everything from their newer synth-pop of “Music of the Spheres” to slower ...

Trans-Neptunian objects (TNO) are some of our solar system's lesser-known objects. They number in the thousands, and they get ...

Because Pluto is so dim, you need a telescope to see it. “A backyard telescope could do it under the right conditions,” says ...

Early birds can catch our satellite just 3° from two giant planets in Pisces: lovely ringed Saturn and far distant Neptune.

Astronomers have uncovered major size errors in TESS planet data, suggesting we’ve found fewer Earth-like exoplanets than we believed.

A celestial spectacle delights astrophotographers as planets Venus (left) and Saturn (lower right) appear in the dawn sky ...

Despite two planets stationing retrograde this week, five astrological signs are living the dream all week long.

Scientists have found that Uranus is emitting its own internal heat — even more than it receives from sunlight — and this ...

The Apollo-Soyuz Test Project brought Soviet cosmonauts and NASA astronauts together in the first international human ...

Astronomers discover a new strategy for detecting exoplanets: look for aligned binary stars that reveal hidden worlds more ...

This evening’s viewing challenge is the planet Mercury. It is less than half a fist above the west-northwestern horizon at ...