Mar. 17, 2016 — A student-built instrument riding on NASA's New Horizons spacecraft found only a handful of dust grains, the building blocks of planets, when it whipped by Pluto at 31,000 miles per hour last ... read more

Mar. 11, 2016 — Far in the western hemisphere, scientists on NASA's New Horizons mission have discovered what looks like a giant "bite mark" on Pluto's surface. They suspect it may be caused by a ... read more

Feb. 25, 2016 — Using observations from the Cassini spacecraft, a team of astronomers has been able to specify the possible positions of a ninth planet in the Solar ... read more

Feb. 19, 2016 — Pluto's largest moon may have gotten too big for its own skin. Images from NASA's New Horizons mission suggest that Pluto's moon Charon once had a subsurface ocean that has long since ... read more

Feb. 8, 2016 — Every school kid learns the basic structure of the Earth: a thin outer crust, a thick mantle, and a Mars-sized core. But is this structure universal? Will rocky exoplanets orbiting other stars have ... read more

Jan. 20, 2016 — Researchers have found evidence of a giant planet tracing a bizarre, highly elongated orbit in the outer solar system. The object, which the researchers have nicknamed Planet Nine, has a mass about ... read more

Dec. 5, 2015 — NASA's New Horizons spacecraft has sent back the first in a series of the sharpest views of Pluto it obtained during its July flyby -- and the best close-ups of Pluto that humans may see for ... read more

Oct. 15, 2015 — The New Horizons team described a wide range of findings about the Pluto system in its first research paper, just published. 'The Pluto System: Initial Results from its Exploration by New ... read more

Oct. 8, 2015 — The first color images of Pluto's atmospheric hazes, returned by NASA's New Horizons spacecraft last week, reveal that the hazes are ... read more

Aug. 11, 2015 — Data from the NASA New Horizons Mission hint that Pluto may still be geologically active, a theory that could explain how Pluto's escaping atmosphere remains flush with ... read more

July 22, 2015 — Pluto's moon Nix, imaged by the New Horizons Ralph instrument, has a reddish spot that has attracted the interest of mission scientists. Pluto's small, irregularly shaped moon Hydra is ... read more

July 22, 2015 — A newly discovered mountain range lies near the southwestern margin of Pluto's Tombaugh Regio (Tombaugh Region), situated between bright, icy plains and dark, heavily-cratered ... read more

July 17, 2015 — In the latest data from NASA's New Horizons spacecraft, a new close-up image of Pluto reveals a vast, craterless plain that appears to be no more than 100 million years old, and is possibly ... read more

July 16, 2015 — A new image of an area on Pluto's largest moon Charon has a captivating feature -- a depression with a peak in the ... read more

July 16, 2015 — Back in 1930, it was an easy answer -- Pluto was a planet because we couldn't see anything else brighter at a similar distance away from us, says a cosmologist. Then, in the 1990s, astronomers ... read more

July 15, 2015 — New close-up images of a region near Pluto's equator reveal a giant surprise: a range of youthful mountains rising as high as 11,000 feet (3,500 meters) above the surface of the icy ... read more

July 15, 2015 — Since its discovery in 2005, Pluto's moon Hydra has been known only as a fuzzy dot of uncertain shape, size, and reflectivity. Imaging obtained during New Horizons' historic transit of the ... read more

July 15, 2015 — The latest spectra from New Horizons Ralph instrument reveal an abundance of methane ice, but with striking differences from place to place across the frozen surface of ... read more

July 15, 2015 — Remarkable new details of Pluto's largest moon Charon are revealed in this image from New Horizons' Long Range Reconnaissance Imager (LORRI), taken late on July 13, 2015 from a distance of ... read more

July 15, 2015 — Icy mountains on Pluto and a new, crisp view of its largest moon, Charon, are among the several discoveries announced Wednesday by the NASA's New Horizons team, just one day after the ... read more