New Horizons' Data of Pluto/Charon Show Rarity of Small Kuiper Belt Objects

Pluto’s largest moon, Charon, as seen by New Horizons in 2015. The lack of smaller craters -less than expected – suggests that small objects less than a mile in size are rare in the Kuiper Belt. Photo Credit: NASA/JHUAPL/SwRI/Alex Parker

The Kuiper Belt is a vast region of rocky debris in the outer Solar […]

New Horizons Reaches Halfway Point Between Pluto and Next KBO Target

New Horizons is now halfway from Pluto to its next destination – the KBO known as 2014 MU69, which it will reach on Jan. 1, 2019 (artist’s conception). Image Credit: NASA/JHUAPL/SwRI

It may not seem like it, but it is approaching two years now since New Horizons made its historic flyby of Pluto […]

New Horizons Completes Another Course Adjustment in Preparation for 2019 Flyby of Next KBO

Artist’s conception of New Horizons approaching 2014 MU69 in 2019. Image Credit: NASA/JHUAPL/SWRI/Steve Gribben

Long after its incredible encounter with Pluto and its moons in 2015, the New Horizons spacecraft is continuing its journey deeper into the Kuiper Belt in the outer reaches of the Solar System. Mission scientists and engineers are now […]

Ancient Water World: Tectonics on Pluto's Moon Charon Point to Frozen Subsurface Ocean

Charon (upper left) and Pluto as seen by New Horizons on July 14, 2015. Photo Credit: NASA/JHUAPL/SwRI

Charon is Pluto’s largest moon and, despite being so cold and remote from the Sun, has been revealed to be a fascinating and active world, just like Pluto itself. Residing in the far outskirts of the […]

New Horizons Finishes Returning Pluto Data to Earth Before Continuing Farther into Kuiper Belt

Artist’s depiction of data being sent by New Horizons back to Earth. Image Credit: NASA/JHUAPL/SwRI

To say that the New Horizons mission has been a success would be a massive understatement; this first-ever spacecraft to visit Pluto has revolutionized our understanding of this distant, small world. Pluto and its moons are complex and […]

Pluto Once Had Rivers and Lakes of Liquid Nitrogen, New Horizons Data Suggests

Artist’s conception of Pluto’s surface, with the distant Sun and largest moon Charon in the sky. The surface is frozen now, but evidence suggests that rivers and lakes of liquid nitrogen once flowed here. Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Alex Parker

As has been discussed extensively now on AmericaSpace, […]

Pluto Revealed: Five New Science Papers Highlight Discoveries by New Horizons

High-resolution view of Pluto from New Horizons. The large smoother area of ice in Sputnik Planum is the western lobe of the “heart” feature. Image Credit: NASA/JHUAPL/SwRI

Pluto is a tiny world in the outer fringes of the Solar System; for many decades it was only a mere speck of light in even […]

New Horizons Discovers Methane 'Snow' on Pluto's Mountain Peaks

Methane “snow” on mountain peaks in the Cthulhu region of Pluto. The enhanced color version of the inset image is on the left and the false color version is on the right. The image covers an area 280 miles (450 kilometers) long by 140 miles (225 kilometers) wide. Image Credit: NASA/JHUAPL/SwRI

As the […]

New Horizons Finds Evidence for Frozen Ocean Inside Pluto's Moon Charon

The canyons of Charon, some of which dwarf the Grand Canyon on Earth. Image Credit: NASA/JHUAPL/SwRI

One of the most surprising discoveries in recent years in the outer Solar System is that there are small moons which have oceans inside them. Jupiter’s moon Europa and Saturn’s moon Enceladus are now known to have […]

The 'Floating Hills' of Pluto: Icebergs In a Frozen Nitrogen Sea

Icebergs on Pluto: The large blocks of water ice float in a “sea” of nitrogen ice and are thought to have broken off from the rugged and mountainous highlands. Image Credit: NASA/JHUAPL/SwRI

Pluto is a tiny world and incredibly distant from the Sun, so it was a pleasant surprise for scientists last summer […]