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1,394 articles from NASA

Repair Shops for Broken DNA

NASA-supported scientists have discovered cellular repair shops where DNA broken by space radiation may be put back together again.


SATURDAY 3. NOVEMBER 2007


A Fantastic Monday Morning Sky Show

On Monday morning, Nov. 5th, space shuttle Discovery is scheduled to undock from the ISS while the pair are gliding over many US towns and cities. The two spaceships will cut across a glittering expanse of morning stars dotted by bright planets and a Venus-Moon conjunction. And don't forget the exploding comet! It all adds up to "A Fantastic Monday Morning Sky Show."


WEDNESDAY 17. OCTOBER 2007


The Fantastic Skies of Orphan Stars

Do you love gazing at a starry night sky? Nothing you've ever seen on Earth could prepare you for the fantastic skies of some "orphan stars" just discovered by astronomers using NASA's Chandra X-ray Observatory.


FRIDAY 12. OCTOBER 2007


New Lakes Discovered on Titan

The Cassini spacecraft has discovered three new lakes near the south pole of Saturn's moon Titan. These strange bodies are filled not with water but liquid methane and ethane. Researchers are also studying a lake near Titan's north pole larger than Lake Superior.


THURSDAY 11. OCTOBER 2007


Giant Atmospheric Waves Sighted Over Iowa

Last week, cameras in Iowa captured a giant atmospheric wave passing over Des Moines--see the movie in today's story. Atmospheric scientists believe these waves, called undular bores, may be more common and important than previously thought.


THURSDAY 4. OCTOBER 2007


Tones from Deep Space

Fifty years after the launch of Sputnik kicked off the Space Age, an ultra-modern probe heading for Pluto is using retro Sputnik-like tones to communicate with Earth.


MONDAY 1. OCTOBER 2007


The Sun Rips off a Comet's Tail

Earlier this year, Comet Encke was passing a little too close to the Sun when a coronal mass ejection (CME) hit the comet and ripped off its tail. NASA's STEREO spacecraft was watching and recorded a must-see movie featured in today's story.


SATURDAY 29. SEPTEMBER 2007


A New Lunar Impact Observatory

Researchers from the Marshall Space Flight Center have built a new "lunar impact" observatory in rural north Georgia. They're using it for their own cutting edge research and sharing the facility with local middle- and high-school students.


THURSDAY 27. SEPTEMBER 2007


Voyage to the Giant Asteroids--Liftoff!

NASA's Dawn spacecraft has left Earth on a mission to explore the giant asteroids Ceres and Vesta. Today's Science@NASA story explains the scientific reasons for making the trip.


WEDNESDAY 26. SEPTEMBER 2007


Blasting a Hole in a Comet: Take 2

Two years ago, NASA's Deep Impact spacecraft blasted a hole in Comet Tempel 1, offering researchers their first look inside a comet. One small problem: The cloud of debris was so thick no one could clearly see the crater. But now the dust has cleared and another NASA spacecraft is returning to the scene to examine the hole Deep Impact wrought.


SATURDAY 22. SEPTEMBER 2007


Cave Skylights Spotted on Mars

NASA's Mars orbiters have spotted "skylights" apparently leading to cavernous underground spaces on Mars. The discovery is fueling interest in potential underground habitats and sparking searches for caverns elsewhere on the Red Planet.


WEDNESDAY 19. SEPTEMBER 2007


A Giant Trilobite on the Sun

Last week scientists converged on the Living With a Star workshop to share the latest research in solar physics. At one point, nearly 200 participants sat slack-jawed as they watched a new movie recorded by Japan's Hinode spacecraft showing a sunspot emerging from the depths of the sun.


SATURDAY 15. SEPTEMBER 2007


Fasten Your Seat Belts

NASA's adventurous Discovery program--responsible for the first rover on another planet, the first landing on an asteroid, the first samples of a comet returned to Earth and much more--is about to get even better.


SATURDAY 8. SEPTEMBER 2007



MONDAY 3. SEPTEMBER 2007


Basil Orbits Earth

When she blasted off onboard the space shuttle last week, teacher-turned-astronaut Barbara Morgan carried millions of basil seeds to the ISS. Soon she'll return millions more "space seeds" for students on Earth to study.

Cosmic Cockroaches

A tough, pesky molecule possibly key to the origins of life on Earth has been spotted in deep space surviving the ferocious blastwave of a supernova explosion.

Hurtling Toward Mars

Earth and Mars are rapidly converging. Relative speed: 22,000 mph. Contrary to rumor, Mars is not about to swell to the size of a full Moon, but there is something eerie and Martian to look for in the night sky next week.

The Exploding Lunar Eclipse

On Tuesday morning, Aug. 28th, a team of astronomers and engineers at the Marshall Space Flight Center will attempt something never done before--to observe meteoroids hitting the Moon and exploding during a lunar eclipse.