Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

The zodiacal light shines in the evening as the Moon reaches Last Quarter and skims past Spica and Antares in the sky this ...

Gaia-4b, a giant exoplanet orbiting a small star, is the first planet confirmed using Gaia’s astrometric technique.

"With an orbital period of 570 days, it is a relatively cold gas giant planet," said Guðmundur Stefánsson of the University ...

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

Clyde Tombaugh discovered Pluto in 1930 at Lowell Observatory in Flagstaff. Here's how Pluto won - and lost - its planetary status.

Explore the impact of stellar flares on the potential for alien life. Discover how higher levels of UV radiation can both ...

Filmmaker Adam Nemoy helps celebrate the 90th anniversary of Pluto's discovery this month at the 6th annual 'I Heart Pluto' ...

Take advantage of a special 6-7 planet alignment from Earth's perspective. Planets 'line up' in the skies over California in ...

Alongside Pluto, Eris was also classified as a dwarf planet under the new criteria ... a seasoned content writing professional with over 5 years of experience in digital journalism, specializing ...

the NEID (pronounced ‘nu-id') spectrograph on the WIYN 3.5-meter telescope at Kitt Peak National Observatory in Arizona, as well as the Habitable-zone Planet Finder on the 10-meter Hobby Eberly ...