Investigation of an ancient Martian meteorite has re-fueled a debate about evidence of possible past life on Mars.
NASA researchers announce they've verified 715 new planets orbiting around 305 stars.
Recent observations of the dwarf planet Ceres by the European Herschel Space Observatory have revealed for the first time the presence of water vapor on this object in the Main Asteroid Belt.
The NASA spacecraft is designed to answer a 42-year-old mystery about lunar dust, but it's also snapping photos along the way.
On Monday, far beyond the orbit of Mars, an alarm clock went off and a robot began the slow process of waking up after a long, cold sleep. The European Space Agency's Rosetta spacecraft is now approaching the comet 67P/Churyumov–Gerasimenko, which it will catch up with this May.
A tag-team of all-star research aircraft, including a robot, set out next week on a quest to explore a great atmospheric engine in the West Pacific with a powerful influence on global climate.
Let's take a moment to tally a few of 2013's highlights of astronomy and space exploration. In brief, it was a very good year on a number of fronts.
In San Francisco this week, NASA scientists presented rare video footage of the Earth and moon, plus a first for citizen space science.
If you had to make a choice to shut down either the Mars rover Curiosity or that explorer of the Saturn system Cassini, would you deliver a pink slip to the young, eager, energetic newbie or force an early retirement on a veteran explorer who has delivered volumes of knowledge?
The Chelyabinsk meteor was a 65-foot hunk of space rock that entered the Earth's atmosphere at about 12 miles per second before exploding with a force equal to 600,000 tons of TNT, enough to level buildings and send 1,200 people to local hospitals.
Maybe a week before it passes closest to the sun, the dark side of Comet ISON is expected to begin turning into the sunlight. The sudden exposure to the intense radiation could cause a strong outburst of gases into the coma--like a celestial popcorn kernel suddenly bursting.
NASA's "Engineer with a Mohawk" has become a pop culture phenom (62,000 Twitter followers isn't too shabby). But under that comb beats the heart of a true explorer, as we found when he dropped by for a visit.
NASA's Curiosity rover on Mars has raised some eyebrows by something it has not detected: methane. And, much farther out, the Cassini spacecraft has made a positive detection of plastic in the atmosphere of Saturn's moon Titan.
The moon often seems like an ancient relic of space exploration, that dusty, dry, airless ball of rock and soil that we visited decades ago and have since left alone—possibly because we found nothing there but dust, rock, and soil? Not so fast. Exploration in the past few years has revealed aspects of the moon that contradict what we were taught in school.
A comet named ISON has been hailed as a possible "comet of the century." But scientists aren't sure yet if it will survive a hairpin turn around the sun.
In 1972, an Apollo 17 astronaut glimpsed a strange phenomenon of streaming light from the window of the command module as it orbited the dark side of the moon. Now, a new NASA mission aims to discover what caused that phenomenon, and whether it could be a hazard for future lunar landings.
If you think the list of achievements of NASA's Hubble Space Telescope is impressive, consider that its successor, the James Webb Space Telescope, will sport a mirror 21 feet across, with more than 20 times the light-collecting capability of its predecessor!