Antarctic ozone shows big improvement

The hole in the ozone layer over the Antarctic was the second smallest in the last two decades, data from NASA and the National Oceanic and Atmospheric Administration (NOAA) satellites shows.

Galactic black hole emits massive flare

 NASA's Nuclear Spectroscopic Telescope Array (NuSTAR) has taken its first look at the giant black hole at the center of our galaxy - and caught it right in the middle of a flare-up.

Video: The unexpected patterns of galactic evolution

NASA scientists have discovered an unexpected pattern of change in hundreds of galaxies observed by the Keck and Hubble space telescopes.

Hubble snaps galaxy in a spin

NASA astronomers describe NGC 3344 as a "glorious" spiral galaxy around half the size of the Milky Way, which lies some 25 million light-years distant.

Rover takes first taste of dirt

NASA's Mars rover Curiosity has chomped up its first solid sample, taking it into its Chemistry and Mineralogy (CheMin) instrument for analysis.

The bizarre weather of Uranus

NASA’s Voyager probe swept past Uranus in 1986, but yielded few new details of the planet and its atmosphere. 

Pluto spacecraft may have to dodge orbiting rocks

NASA's New Horizons spacecraft - now just two years away from Pluto - is on a riskier mission than previously realized, thanks to the threat posed bty the planet's moons and possible rings.

NASA exoskeleton to give astronauts a boost

A robotic exoskeleton developed as a spin-off from NASA's Robonaut 2 project could help astronauts stay healthier in space, and paraplegics walk.

Curiosity identifies Earth-like rock - and has its first carwash

The first rock to be touched by NASA's Curiosity rover - dubbed Jake Matijevic - turns out to have a very Earth-like composition, different to anything before seen on Mars.

Video: Curiosity samples Martian soil at Rocknest

NASA's Mars Curiosity rover has successfully collected and sampled a scoopful of sand and powdery material at the "Rocknest" site on the Red Planet.

Stellar-mass black hole stalks the Milky Way

NASA's Swift satellite recently detected a rising tide of high-energy X-rays from a source toward the center of our Milky Way galaxy.

Curiosity set to scoop sand sample that could reveal ancient life

NASA's Curiosity rover is getting ready to take its first scoop of Martian soil.

Spitzer measures rate of universe's expansion

Astronomers have come up with their most accurate measurement yet of the Hubble constant, the rate at which the universe is expanding.

Adapting to a Martian day

Since the beginning of August, NASA's Mars Curiosity rover has been exploring the Red Planet and learning as much as it can about the terrain.

NASA's Curiosity rover finds ancient streambed on Mars

NASA's Mars Curiosity rover has found evidence of an old streambed on the Red Planet.

Exploring the moon in 3D

NASA's Lunar Reconnaissance Orbiter (LRO) has acquired stereo images of the moon in high resolution (0.5 to 2 meters/pixel) that provide highly detailed 3D views of the surface.

Hubble pictures deepest-ever view of space

Astronomers have pieced together the deepest-ever view of the universe, peering back more than thirteen billion years.

NASA’s Mars Curiosity rover analyzes Jake Matijevic

The robotic arm of NASA’s Curiosity rover recently made contact with a Martian rock for the first time - analyzing the chemical elements inside of a rock dubbed "Jake Matijevic" by scientists.

Super-hot gas halo surrounds our galaxy

Our Milky Way Galaxy is surrounded by an enormous halo of hot gas hundreds of thousands of light years across, and with as much mass as all the stars in the galaxy.

NASA eyes space outpost above far side of the moon

NASA scientists and engineers are eyeing the construction of a manned outpost that would hover in orbit above the far side of the moon.