An initial sequence of radar images of asteroid 2012 DA14 was obtained on the night of Feb. 15/16, 2013, by NASA scientists using the 230-foot (70-meter) Deep Space Network antenna at Goldstone, Calif. Each of the 72 frames required 320 seconds of data collection by the Goldstone radar.
Call it a Saturnian version of the Ouroboros, the mythical serpent that bites its own tail.
The NASA Mars Exploration Rover Opportunity is beginning its 10th year roving Mars, completing nine years of "shocking" performance and historic discoveries that began with a bouncing airbag roll into tiny Eagle crater on Jan. 24, 2004.
Titan's siblings must be jealous. While most of Saturn's moons display their ancient faces pockmarked by thousands of craters, Titan -- Saturn's largest moon -- may look much younger than it really is because its craters are getting erased. Dunes of exotic, hydrocarbon sand are slowly but steadily filling in its craters, according to new research using observations from NASA's Cassini spacecraft.
NASA scientists have announced that new observations of 2011 AG5 show that this asteroid, once thought to have a worrisome potential to threaten Earth, no longer poses a significant risk of impact.
Sequences of Goldstone delay-Doppler radar images of Toutatis from the 2012 observing campaign. In each image, range increases down and Doppler frequency increases toward the right, so rotation is counterclockwise.
A collage shows nine radar images of near-Earth asteroid 2007 PA8 that were obtained between Oct. 31 and Nov. 13, 2012, with data collected by NASA's 230-foot-wide (70-meter) Deep Space Network antenna at Goldstone, Calif.
Forecasters could soon be better able to predict how intense tropical cyclones like Hurricane Sandy will be by analyzing relative-humidity levels within their large-scale environments, finds a new NASA-led study.
NASA's car-sized rover, Curiosity, has taken significant steps toward understanding how Mars may have lost much of its original atmosphere.
Like a Hollywood starlet constantly retouching her makeup, the giant asteroid Vesta is constantly stirring its outermost layer to present a young face. Data from NASA's Dawn mission show that a form of weathering that occurs on the moon and other airless bodies we've visited in the inner solar system does not alter Vesta's outermost layer in the same way.
Saturn's moon Mimas appears near Saturn, dwarfed by its parent planet in this image. Mimas (246 miles, or 396 kilometers across) appears tiny compared to the storms clearly visible in far northern and southern hemispheres of Saturn.
NASA's Curiosity rover is in a position on Mars where scientists and engineers can begin preparing the rover to take its first scoop of soil for analysis.
NASA's Mars rover Curiosity held its Mars Hand Lens Imager (MAHLI) camera about 10.5 inches (27 centimeters) away from the top of a rock called "Bathurst Inlet" for a set of eight images combined into this merged-focus view of the rock.
Posing for portraits for NASA's Cassini spacecraft, Saturn and its largest moon, Titan, show spectacular colors in a quartet of images being released today. One image captures the changing hues of Saturn's northern and southern hemispheres as they pass from one season to the next.
NASA's Mars rover Curiosity has set off from its landing vicinity on a trek to a science destination about a quarter-mile (400 meters) away, where it may begin using its drill.
Thirty-five years ago yesterday, NASA's Voyager 2 spacecraft, the first Voyager spacecraft to launch, departed on a journey that would make it the only spacecraft to visit Uranus and Neptune and the longest-operating NASA spacecraft ever.
This image is the first high-resolution color mosaic from NASA's Curiosity rover, showing the geological environment around the rover's landing site in Gale Crater on Mars.
This is the first 360-degree panorama in color of the Gale Crater landing site taken by NASA's Curiosity rover. The panorama was made from thumbnail versions of images taken by the Mast Camera.
False-color images from NASA's Cassini spacecraft show the development of a hood of high-altitude haze - which appears orange in this image -- forming over the south pole of Saturn's moon Titan.
On This Week at NASA we have the following stories: The International Space Station and its benefit to science as the world's only laboratory in microgravity is highlighted on Capitol Hill. Also, NASA administrator Charles Bolden Finds NEEMO; JPL has its annual Open House; Cleveland HUBZone; African Cosmos; Aerospace Scholars; NASA Now Emmy; SOI; and more!