New Horizons Conducts Final Course Correction for New Year's Day Flyby of Next KBO in 2019 

New Horizons has completed the four course corrections needed to send it on its way to its next target in the Kuiper Belt, 2014 MU69. Image Credit: NASA/JHUAPL/SwRI

After having completed a wildly successful flyby of Pluto and its moons, the New Horizons spacecraft was given a new target, much farther out in […]

New Horizons Changes Course for Flyby of First Post-Pluto Destination on New Year's Day 2019

New Horizons has sped past the Pluto system and is now on its way to its next target in the Kuiper Belt, 2014 MU69. Image Credit: NASA/JHUAPL/SwRI

After having completed its successful encounter with Pluto and its moons last July, the New Horizons spacecraft is now setting its sights on its next target […]

The Early Solar System Could Have Hosted a Fifth Giant Planet, According to New Study

Artist’s impression of a rogue gas giant planet, free-floating in interstellar space. According to a new study, the early Solar System hosted a fifth gas giant planet besides Jupiter, Saturn, Uranus, and Neptune, which was eventually ejected into interstellar space through the gravitational interactions with the rest of the Solar System’s giant planets. […]

New Study Suggests Abundance of Nitrogen on Pluto May Be Due to Cryovolcanism

A spectacular image of Pluto’s atmosphere backlit by the Sun, taken during New Horizons’ closest approach to Pluto on July 14. The bright halo of Pluto’s atmosphere is caused by the scattering of sunlight from nitrogen, a compound that dominates the planet’s atmosphere. A new study suggests that the source of all this […]

New Petition Aims to Restore Pluto's Planetary Status

A breathtaking montage of Pluto and Charon, assembled from separate images that were taken on July 13 and 14 from NASA’s New Horizons spacecraft, as the latter was making its historic close fly by of the distant dwarf planet and its system of moons. New Horizons’ highly successful mission has provided a new […]

Two Days to Pluto: Guiding New Horizons to the Solar System's Ragged Edge (Part 2)

Whether a dwarf planet, plutoid, trans-Neptunian object or Kuiper Belt object, Pluto has emerged from the gloom to reveal her secrets. Image Credit: NASA-JHUAPL-SWRI

We’re nearly there.

Eighty-five years after it was first identified by U.S. astronomer Clyde Tombaugh and subsequently named by English schoolgirl Venetia Burney, 39 years since its surface was […]

Three Days to Pluto: Guiding New Horizons to the Solar System's Ragged Edge (Part 1)

Artist’s concept of the New Horizons spacecraft during its planned encounter with Pluto and its moon, Charon. Image Credit: NASA

After 9.5 years, 114 months, more than 490 weeks, and around 3,500 days since launch, NASA’s New Horizons mission is now into double-figure-hours as it initiates the final countdown toward a historic rendezvous […]

The Science of Pluto: The Sails of Charon (Part 2)

An artist’s concept of Charon (at front), with Pluto seen in the background. Equally as fascinating and exciting as Pluto, Charon has sported its own set of intriguing mysteries and unanswered questions, some of which include the exciting possibility for the existence of geyser-like surface eruptions, underground layers of liquid water, and even […]

Shedding New Light On the Solar System: Celebrating 25 Years of Hubble Science (Part 2)

A series of images of Uranus and Neptune that were taken with the Hubble Space Telescope. The top row reveals the ice giant planets in natural colors, showing the planets as they would appear if we could see them through a telescope. The images at the bottom were taken with certain types of […]

New Horizons Ready for Last Wake-Up Call Prior to Start of Historic Pluto Encounter Operations

Artist’s impression of NASA’s New Horizons spacecraft approaching Pluto and its system of moons. New Horizons is getting ready to emerge from its electronic hibernation on December 6, in order to begin its final preparations for the start of the Pluto encounter operations in January 2015. Image Credit: Johns Hopkins University Applied Physics […]