About 120,000 light years across, the NGC 624 galaxy, shown here as seen by Hubble, is slightly bigger than our own Milky Way
Last week, NASA and Eventi organized a free, public event with demonstrations, activities, interactive exhibits, video segments, and more
This composite image, made with data from the Chandra X-ray Observatory and the Digitized Sky Survey, shows pulsar PSR J0357
The four members of the STS-135 crew visited the set of Stephen Colbert's The Colbert Report during a three-day visit to New York City
Named for the French astronomer Charles Messier, the nebula colloquially known by scientists as Dumbbell was discovered in 1764
On August 4, Opportunity crawled 396 feet closer to the rim of the Endeavour Crater and then snapped this with its panoramic camera
The heat shield, which is shown here broken into two large pieces, protected Opportunity as it descended through the Martian atmosphere
With both Carriers in the air at the same time, one of the pilots moved them into formation for 20 minutes over Edwards Air Force Base
Astronaut Ron Garan captured this image during the Perseid shower from 220 miles above the border between China and Mongolia
Scientists working at NASA call this the cosmic exclamation point because its glowing structure resembles that of the punctuation mark
This photo was captured by Ron Garan who, as part of Expedition 28, was aboard the International Space Station on Sunday, July 31
Taken during the six-hour, 23-minute walk last week, this photograph shows Sergei Volkov, the first second-generation cosmonaut
n July, NASA flew two Lockheed P-3 Orion planes over Maryland in order to conduct a series of tests on the air quality in the region
Located on Vesta, one of the largest known asteroids, these craters appear to be stacked, one on top of the next, like balls of packed snow
On the afternoon of Friday, August 5, 2011, not long after NASA wrapped its lengthy Space Shuttle program, it was on to the next project
Astronomers knew that Saturn's atmosphere was home to gaseous water. But they had no idea where it was coming from. Until now.
NASA is already working to test the capabilities of what will eventually become the agency's future Orion Multi-Purpose Crew Vehicle
This photo of the Orion stack was taken inside of the Reverberant Acoustics Laboratory at Lockheed Martin's facility outside Denver
The store looks similar to other Apple locations, with long wooden tables, a sea of black stools and lots of blue t-shirts and iThings
NASA believes that the small hills at the foreground of this image could contain clues to the current water cycles on the Red Planet