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

If it weren't for the new budget, New Horizons could keep exploring the outer reaches of the solar system into the 2030s.

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

On July 14, 2015, the New Horizons space probe came within 7,800 miles of Pluto, providing NASA scientists with the clearest ...

It took over nine years for New Horizons to reach Pluto after blasting off atop an Atlas 5 rocket on Jan. 19, 2006. After ...

On July 14, 2015, a spacecraft flew by Pluto for the first time! NASA's New Horizons spacecraft spent 9.5 years making the ...

Pluto isn’t considered a planet because it lacks enough gravity to clear its orbit, not just because of its distance. Despite receiving less than 1% of Earth’s sunlight, Pluto is still surprisingly ...

Heads up, stargazers, as the dog days of summer take hold this week, a series of planets enter their retrograde phase, ...