Pluto will complete its first orbit since 1930 in 2178, a historic 248-year space journey that spans generations of humans.

Pluto has not completed a single orbit since its 1930 discovery. With a 248-year journey around the Sun, the dwarf planet will finish its first full circuit in 2178.

The outer solar system begins where sunlight fades and distances stretch beyond everyday comprehension. This journey traces humanity’s exploration of Uranus, Neptune, and Pluto, revealing how extreme ...

NASA’sNew Horizons spacecraft has delivered extraordinary video footage showing towering ice mountains on Pluto’s moon Nix. These ice peaks, some rising as high as 11,000 feet, are made of pure water ...

No matter how hard you try, it’s impossible to keep up with everything that’s happening in the world. Staying up to date on ...

Sky This Week is brought to you in part by Celestron. Friday, March 13Look north this evening a couple hours after sunset and you'll easily spot the large shape of the Big Dipper as it sits ...

A program about the spring equinox will be front and center at the University of Wyoming Harry C. Vaughan Planetarium during March.

A NASA-sponsored team has developed electronics that can operate reliably in the harsh radiation and temperature conditions found on distant planetary bodies like Europa, an ocean world orbiting ...

NASA has completed the Artemis 2 flight readiness review and plans to launch the historic moon mission as soon as April 1.

Why does Pluto's orbit take so long? Pluto's orbit is not like those of the eight major planets, which are relatively circular. Instead, it is highly elliptical and tilted. At tim ...

A bright new lunar crater detected in spacecraft images shows that asteroid impacts continue to reshape the Moon’s surface today. The Moon’s familiar surface tells a story of both ancient violence and ...