The revelation that Pluto and its large moon may have collided, causing Pluto to be geologically active, could mean there are ...

NASA's most remarkable achievements include launching Explorer 1 in 1958, the 1969 Apollo 11 moon landing, and the Hubble ...

NASA's New Horizons Pluto probe is gearing up to cross the "termination shock," an exotic boundary in the outer solar system, as early as 2027.

NASA scientists have discovered Altjira system, a group of 3 space rocks in Kuiper Belt, providing evidence for the theory of ...

The puzzle of predicting how three gravitationally bound bodies move in space has challenged mathematicians for centuries, and has most recently been popularized in the novel and television show '3 ...

The Voyager probes are each turning off an instrument to avoid ending their 47-year-long missions later this year.

Pluto, with its heart-shaped glacier, as captured by the New Horizons spacecraftJPL/NASA Pluto will mark a birthday of sorts on March 23, 2178. No one is likely to be there to celebrate it ...

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

Scientists at NASA for the first time have been able to observe the make up of Pluto and other small and icy celestial bodies in the outer solar system. At such a critical moment in US history, we ...

The document builds on the academies' decadal survey, outlining recommended missions for NASA's next New Frontiers program.