Does Earth Have a New Moon? Kinda But Not Really

This week NASA’s Jet Propulsion Laboratory announced news of an object traveling around the Sun in an orbit that keeps it relatively close to our own planet. The object, a near-Earth asteroid (NEO) less than 300 feet (100 m) across, is designated 2016 HO3 and has in some reports been called a “new” or “mini”…

Venus’ Water Has Been Electrified Away

Using data gathered by ESA’s Venus Express researchers have determined what likely happened to Venus’ water: it was “zapped” away by a surprisingly strong electric field generated by the planet’s atmosphere and the incoming solar wind. Without a protective magnetosphere like Earth has, Venus’ upper atmosphere directly interacts with energetic particles streaming out from the Sun. The…

Icy Nix Indicates Pluto’s Moons Are Leftovers From a KBO Collision

Recent findings from the New Horizons team reveal that Pluto’s third-largest satellite Nix is covered in the purest water ice yet observed in the dwarf planet system, even purer in spectra than what was seen on its slightly larger sibling Hydra. This analysis further supports the hypothesis that Pluto’s moons were created in an impact event…

Bend It Like Saturn

The lines of Saturn’s rings appear to get sharply bent as their reflected light passes through the upper atmosphere of the planet before being captured by Cassini’s camera in this raw image, acquired on June 9, 2016. Enormous Saturn of course is, by volume, nearly all atmosphere with a solid core only about the size…

New Planet and Pluto Stamps Available Today!

They’re here and they’re from outer space! The U.S. Postal Service has two new sets of Forever® stamps based on NASA’s exploration of the Solar System: the Views of Our Planets and Pluto—Explored! series, both of which become available for purchase on May 31, 2016. Designed by Antonio Alcalá, the Views of Our Planets stamps feature…

Death in Space

Here’s a bit of fun for you: an animated short of ways one could meet one’s end on a space adventure, by professional animator and illustrator Tom Lucas. Obviously this is more science-fiction than science fact, what with the hungry aliens and all, but you still wouldn’t want to smash yourself in the faceplate with a chunk…

Dawn Sees Landslides and a Central Ridge in a Young Crater on Ceres

Ceres’ Haulani Crater, with a diameter of 21 miles (34 km), shows evidence of landslides from its crater rim. Smooth material and a central ridge stand out on its floor. This image was made using data from NASA’s Dawn spacecraft when it was in its high-altitude mapping orbit, at a distance of 915 miles (1,470…

NASA Sets Sail to Study Ocean and Climate

NASA has launched on another mission of exploration, except this time it wasn’t on a rocket ship from Cape Canaveral but rather on a research ship from Cape Cod. NASA’s North Atlantic Aerosols and Marine Ecosystems Study—aka NAAMES—is a five-year-long investigation to resolve key processes controlling ocean system function, their influences on atmospheric aerosols and clouds…

Solar Photographer Spots Mercury On Its Trip Across the Sun

On May 9, 2016, over the course of seven and a half hours beginning at 7:12 a.m. EDT (11:12 UTC) Mercury passed across the disk of the Sun, appearing to observers on Earth as a small dark dot in front of the massive brilliance of our home star. While the event wasn’t visible to the naked…

Hail Hydra: Pluto’s Moon is Covered in Almost Pure Water Ice

Discovered in June 2005, distant Pluto’s outermost moon Hydra it thought to have formed during the same collision four billion years ago that created the Pluto-Charon system that we see today. Yet despite its age this 31-mile (50-km) -long moon appears remarkably clean and bright,  as witnessed by New Horizons during its close pass through the Pluto system in July 2015.

Enceladus’ Jets: the Farther They Are, the Harder They Spray

A crowning achievement of the Cassini mission to Saturn is the discovery of water vapor jets spraying out from Enceladus‘ southern pole. First witnessed by the spacecraft in 2005, these icy geysers propelled the little 320-mile-wide moon into the scientific spotlight. After 22 flybys of Enceladus during its nearly twelve years in orbit around Saturn, Cassini has gathered enough data to determine…

Take a Ride with Alan Shepard Aboard Freedom 7

55 years ago today, at 9:35 a.m. EST on May 5, 1961, NASA astronaut Alan B. Shepard, Jr. became the first American to travel into space with the launch of his Freedom 7 vehicle atop a Mercury-Redstone rocket. Shepard reached an altitude of 116.5 miles during his 15-minute suborbital flight before splashdown in the Atlantic,…