May 11, 2015
May 11, 2015: One day, when humans go to Mars, they might find that, occasionally, the Red Planet has green skies. In late Dec. 2014, NASA's MAVEN spacecraft detected evidence of widespread auroras in Mars's northern hemisphere. The "Christmas Lights," as researchers called them, circled the... Read More
Universe, Sun, Solar System
May 5, 2015
May 5, 2015: As May of 2015 unfolds, Halley's Comet is more than 5 billion kilometers from Earth, receding into the inky blackness of the outer solar system, where its looping orbit takes it every 76 years. Dim and distant, history's most famous comet won't be back until sometime in 2061.Can’t... Read More
Universe, Earth, Solar System
Apr 30, 2015
April 30, 2015: The planet closest to the Sun is, ironically, one of the coldest.That’s just one of many mind-bending discoveries about Mercury that NASA’s MESSENGER spacecraft beamed back to Earth over the past 7 years. Earlier today, the mission ended with a crash as spectacular as some of its... Read More
Apr 28, 2015
The Amazon rainforest and the Sahara desert seem utterly different. Yet NASA satellites have discovered a surprising connection that intimately links these two disparate parts of our planet.
Apr 21, 2015
April 21, 2015: When NASA's New Horizons spacecraft flies by Pluto this July, the spacecraft's high-resolution cameras will spot many new landforms on the dwarf planet's unexplored surface. There could be mountains, craters, rilles, valleys and, of course, the unknown.They are all going to need... Read More
Apr 21, 2015
At the end of a day devoted to Earth, people can look to the heavens for a beautiful shower of Lyrid meteors.
Apr 7, 2015
Citizen scientists scanning images from a NASA observatory have found "yellow balls" in space that may hold important clues to the mysteries of starbirth.
Mar 30, 2015
On Saturday morning, April 4th, sky watchers in the USA can see a brief but beautiful total eclipse of the Moon.
Mar 18, 2015
Tiny solar flares on the sun may be having an outsized effect on the temperature of the sun's atmosphere. To investigate, scientists will observe these "nanoflares" using a space telescope built for black holes.
Mar 10, 2015
NASA is about to launch a fleet of spacecraft to investigate the mystery of "magnetic reconnection," which is making things explode across the cosmos.
Mar 5, 2015
March 5, 2015: Mark your calendar. On Friday, March 6th, NASA’s Dawn spacecraft will enter orbit around Ceres, becoming the first spacecraft from Earth to visit a dwarf planet. "Dawn is about to make history," said Robert Mase, project manager for the Dawn mission at NASA’s Jet Propulsion... Read More
Mar 4, 2015
The key to unraveling the mysterious cause of Alzheimer's disease may not lie in the recesses of the human brain, but rather in the weightless expanses of outer space.
Feb 27, 2015
Feb 27, 2015: Dwarf planet Ceres continues to puzzle scientists as NASA's Dawn spacecraft gets closer to being captured into orbit around the object. The latest images from Dawn, taken nearly 29,000 miles (46,000 kilometers) from Ceres, reveal that a bright spot that stands out in previous... Read More
Feb 27, 2015
Feb 27, 2015: Cruising through the asteroid belt, NASA Dawn spacecraft is approaching dwarf planet Ceres, and some puzzling features are coming into focus. "We expected to be surprised by Ceres," says Chris Russell, principal investigator of the Dawn mission, based at UCLA. "We... Read More