Two of Pluto's midsize moons may be made of the guts of its largest moon, Charon, new research suggests.

Discover how astronomers use stellar parallax to navigate spacecraft in deep space without relying on Earth-based beacons.

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an ...

Hygiene Elementary students on Wednesday watched as Principal Renee Collier, with a dramatic flair and drum rolls, opened a ...

On September 5, 1977, the power situation was a good deal healthier when the mission got underway. Launched just over two ...

Summer 2015 was marked by a unique astronomical event, which occurs approximately once in the history of astronomy. The New ...

Using NASA New Horizons images scientists have discovered that dunes have formed from a release of methane ice grains. Credit ...

Astronomer and Pluto mission leader S. Alan Stern explores how the field has transformed during his decades-long career.

A new trans-Neptunian object, 2017 OF201, has been found with a vast orbit and potential dwarf planet size. The finding hints ...

September is the Autumnal Equinox — the beginning of fall — in the Northern Hemisphere. Here’s a look at “What’s up in the sky” in the D.C. region this month.

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On Episode 176 of This Week In Space, Rod Pyle and and Tariq Malik are joined by Alan Stern to talk about what's next in deep ...