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26 August 2015, 02:04 PM ET
The full moon this Saturday (Aug. 29) will look especially big in the sky, because the moon will be exceptionally close to Earth.
26 August 2015, 12:23 PM ET
Global ocean levels have risen about 6 cm (2.3 in) over the past two decades, matching models consistent with human-induced climate change. NASA monitors sea heights and other parameters with the Jason satellite series.
26 August 2015, 10:56 AM ET
The hot core of nebula PN M2-9 is ablaze with ultraviolet radiation illuminating its 'butterfly wings.’ Gaseous shells race outward at over 1 million kilometers per hour (621,371 mph) from the larger of 2 stars at this planetary nebula’s heart.
26 August 2015, 07:00 AM ET
NASA will intentionally crash a plane for science today at 1 p.m. EDT (1700 GMT) today. The space agency will also hold a 12:30 p.m. EDT teleconference to discuss rising sea levels and climate change.
26 August 2015, 06:43 AM ET
Three new spectacular 3D images of a Mars chasm show gullies shaped by erosive forces on the Red Planet.
26 August 2015, 06:40 AM ET
Today's spacecraft feature sensitive gear that may not be able to withstand the extreme heat treatment that sterilized previous Red Planet explorers such as NASA's Viking landers, said Penelope Boston.
26 August 2015, 06:40 AM ET
"Star Trek: Renegades," the 90-minute first installment of a planned Internet series, was released on YouTube Monday (Aug. 24).
26 August 2015, 05:00 AM ET
India's first mission to the Red Planet, called the Mars Orbiter mission, is slated to launch from Satish Dhawan Space Center on Oct. 28, 2013. See photos from the mission's preparation here.
25 August 2015, 07:49 PM ET
The solar system's outer planets — Jupiter, Saturn, Uranus and Neptune — are mainly giant balls of gas much larger than Earth.
25 August 2015, 06:00 PM ET
A new photo, which was taken Sunday by NASA's Aqua satellite, shows just how bad this fire season has gotten in the western United States. Dozens of active blazes are visible throughout California, Oregon, Washington and Idaho.
25 August 2015, 05:12 PM ET
Hawking and two colleagues propose that information isn't destroyed at the heart of a black hole; it's stored at the black hole's boundary in holographic form.
25 August 2015, 05:00 PM ET
On August 19th, 2015, the HTV-5 spacecraft was launched aboard an H-IIB rocket from the Tanegashima Space Center. It is carrying 4.5 tons of supplies, experiment hardware and spare parts for use on the International Space Station.
25 August 2015, 05:00 PM ET
The Milky Way forms a spectacular streak past the curving edge of an observation tower in the Great Smoky Mountains National Park in these amazing views by a talented astrophotographer, who likened the vista to the Jetsons' cartoon futurescape.
25 August 2015, 02:52 PM ET
"The Martian" starring Matt Damon, based on the book by Andy Weir, puts survival by science front and center. A software programmer by day, Weir looked to the online community to research and tweak his fascinating narrative of high stakes adventure.
25 August 2015, 02:00 PM ET
A lonely mountain and other stunning features that dot the surface of the dwarf planet Ceres appear in amazing detail in new images from the Dawn spacecraft.
25 August 2015, 10:52 AM ET
NASA Dawn mission has returned a high resolution image from 915 miles above the surface of Ceres revealing a 4-mile-high mountain with brightly streaked slopes. Dawn captured the area, located in the southern hemisphere, on Aug. 19th, 2015.
25 August 2015, 06:45 AM ET
Despite a rough landing, stem cells riding in a prototype capsule survived a long fall back to Earth during a drop test — part of an initiative to conduct research on the cells in space.
25 August 2015, 06:30 AM ET
Commercial space stations could become a reality within the next 10 years if entrepreneurs and NASA can properly manage the tricky transition from the government-run International Space Station to privately built and operated facilities.
25 August 2015, 06:30 AM ET
How much of the technology in "The Martian" actually exists, or is in the works, today? Read on to find out what NASA's developing for real-life manned Mars exploration.
25 August 2015, 06:00 AM ET
The biggest challenges facing the private Mars One colonization project are financial rather than technical, so a big donation from a deep-pocketed person concerned about his or her legacy could make a huge difference, group representatives said.
25 August 2015, 12:21 AM ET
NASA spacecraft watched closely in 2005 as a record-breaking Atlantic hurricane season yielded 27 named storms, including the devastating Hurricane Katrina.
24 August 2015, 05:07 PM ET
Fifty years ago, two NASA astronauts were more than one-third of the way through what was to be the world's longest space mission at the time. Gordo Cooper and Pete Conrad chose while setting yet another American first in space.
24 August 2015, 04:45 PM ET
The Cassini spacecraft recently got its last close views of Dione, a small icy moon orbiting Saturn.
24 August 2015, 03:32 PM ET
NASA's Solar Dynamics Observatory (SDO) captured an image of the flare, which erupted at 3:33 a.m. EDT (0733 GMT) this morning from a sunspot known as active region 2403.
24 August 2015, 03:30 PM ET
Ten years after the devastation caused by Hurricane Katrina, NASA has helped scientists better understand why the storm was so devastating, and how to save lives in the future.
24 August 2015, 01:50 PM ET
Skywatcher Stephen Ippolito captured this image of a harbor seal and the Milky Way while stargazing at Sand Beach in Acadia National Park in Maine.
24 August 2015, 12:51 PM ET
The ancient lunar surface once erupted with geysers of lava — and now, scientists think they know what caused these fiery fountains.
24 August 2015, 12:40 PM ET
See images of the sun's activity during 2015 in our Space.com gallery.
24 August 2015, 12:35 PM ET
Watch the Milky Way rise above the King Range in California in this breathtaking time-lapse sequence.
24 August 2015, 12:30 PM ET
An astronomer and amateur musician has coaxed a haunting melody from a star's distinctive twinkle.
24 August 2015, 11:46 AM ET
27 ‘named storms’ formed over the warm waters of the Atlantic Ocean in 2005, which spawned the most category 5 storms in a single season. NASA and NOAA tracked the paths of these killers. [On average there are only 10 storms per year.]
24 August 2015, 10:12 AM ET
Data from the GOES-5 satellite drove this simulation, illuminating the wind intensities and water vapor transport powering the massive category 5 storm, which ravaged New Orleans, Louisiana and adjoining areas in 2005.