The tumbleweed rover could dominate Mars exploration, but is there too much bounce in its roll?
The spacecraft aced its orbital driving test Thursday, positioning the company a step closer to becoming the first private firm to reach the space station.
Harvesting antimatter in space would completely bypass the difficulties of an Earth-bound particle accelerator.
Mars rover Opportunity catches a glimpse of its own shadow on the rim of Endeavour Crater.
A new simulation hints at the existence of a world, four times the mass of Earth, is causing the peculiar orbits of scattered disk objects.
A new image from the Lunar Reconnaissance Orbiter shows another side of Tycho's central peak.
Her new mission -- creating a movement filled with people who believe SETI is too important to fail.
A private company's trial run to the space station may be the first step to the Red Planet.
Space Exploration Technologies got off to a rocking start early Tuesday with the launch of its Falcon 9 rocket from Cape Canaveral Air Force Station in Florida. Next stop: the space station.
Some cremated remains of more than 300 space buffs are aboard the Falcon 9 rocket being prepared for launch from Cape Canaveral, Florida on Tuesday morning.
By combining data from three telescopes, astronomers have observed feeding time at the black hole of an active galaxy.
On May 21, 1965, NASA released the Gemini 4 press kit -- in it was a surprise paragraph, one that would change the shape of NASA spaceflight history forever.
Sunday's annular solar eclipse was a spectacular sight seen from Japan to Idaho. Here's a look at some dazzling images submitted by our readers.
At its peak, the moon covered roughly 94 percent of the sun's light.
Just in case you haven't heard, an annular eclipse will dazzle the Pacific Ocean on Sunday.
It's 5 a.m. on a Saturday morning and there’s just been what is truly a heart-stopping moment in the launch business -- a last-second launch abort.
The Falcon 9 rocket ran into a technical issue that aborted the launch just as the engines ignited.
SpaceX's Dragon capsule awaits launch atop the Falcon 9 rocket -- the first commercial cargo test-run to the space station.
The most precise estimate is compiled of the number of dangerous space rocks that could threaten Earth.
Over 50 hours of exposure time by ESO's La Silla Observatory have created the deepest view ever into the radiant heart of Centaurus A.
A test launch this Saturday is among the first commercial-run flights hired by NASA.
The construction of a telescope that could produce images ten-times sharper than Hubble is under way -- but a mountain needs to be blown up first.
The flare triggered a radiation storm intense enough to also cause radio blackouts.
To raise awareness for the growing problem of light pollution and to showcase the beauty of the night sky, a huge international astrophotography contest was held. Here are the winners.
After surviving its fifth Martian winter, NASA's tenacious rover is off to a rolling start.
There is no explanation for how flares more than 1 million times more powerful than solar flares are occurring.
On Sunday evening, the eclipse will march from Oregon and California to Nevada, Utah, New Mexico, Arizona and Texas.
Hope springs eternal for die-hard Star Trek fans that scientists will one day build an actual, working antimatter propulsion engine similar to the one that powers the fictional starship Enterprise.
Commercial space competition may be over before it's even really begun.
China's "Heavenly Palace," an experimental space station launched last September, sprints past the sun and Thierry Legault captured the moment.
NASA astronaut Don Pettit captures a breathtaking view of star trails and city lights in his latest photograph from the space station.
Two cosmonauts and a NASA astronaut begin a two-day journey to the orbiting outpost.
The next Mars rover "Curiosity" has a twin, named "Scarecrow," that's helping NASA scientists simulate Martian conditions on Earth.
What do you call a bubble that's been inverted? An antibubble! Astronaut Don Pettit attempts to create them on the International Space Station.
Weighing in at 318 Earth-masses, Jupiter had the potential to snuff out Earth's formation 4.5 billion years ago.
The number of planets floating between stars in our galaxy could be as high as a hundred thousand billion.
Space rocks from a minivan-size asteroid that exploded over California are now hot commodities.
Travel to Saturn’s frozen moon of Titan and you’ll discover lakes of liquid methane, thick smog clouds and exactly 13 minutes and 46 seconds worth of Earth music.
Black holes are at least partially responsible for the size of their host galaxy; it seems galaxies with more active black holes produce fewer stars.
Lightning and Schumann resonances may help us probe the atmospheres of Venus, Mars, Jupiter, Saturn, and Saturn's moon, Titan from afar.






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