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12 August 2014, 02:00 PM ET
An extraordinary amount of ultraviolet light appears to be missing from the universe, scientists have found.One potential source of this missing light might be the mysterious dark matter that makes up most of the mass in the cosmos.
12 August 2014, 12:05 PM ET
TechDemoSat-1 was launched on July 8th, 2014 aboard a Soyuz-2 launch vehicle. Its inspection camera captured the Soyuz upper stage (gold object) and another satellite it was launched with (white dot @ 34 seconds) over the Pacific Ocean.
12 August 2014, 12:04 PM ET
The U.S. Navy has honored the nation's first woman in space, christening its new ocean research ship after the late astronaut Sally Ride.
12 August 2014, 11:29 AM ET
Robin Williams, an Oscar-winning actor best known for his comedic work, died yesterday (Aug. 11) of an apparent suicide at 63 years old. In 1988, Williams helped to wake up the crew of NASA's space shuttle Discovery to start their morning work.
12 August 2014, 10:35 AM ET
Google is paying tribute to the annual Perseid meteor shower — peaking tonight (Aug. 12) — with a special doodle honoring the usually spectacular cosmic display.
12 August 2014, 10:08 AM ET
Launched on a sounding rocket to ~200,000ft., NASA's Extreme Ultraviolet Normal Incidence Spectrograph (EUNIS) observed superheated material (10M°K) consistent only with theoretical “nanoflares,” which quickly cool to the corona’s ~2M° average.
12 August 2014, 10:06 AM ET
Astronaut candidates have to undergo a psychological evaluation to determine if they have what it takes to fly on a NASA mission. How does the agency choose people with the right stuff?
12 August 2014, 10:00 AM ET
The European Space Agency's fifth Automated Transfer Vehicle (ATV-5) joined up with the station at 9:30 a.m. EDT (1330 GMT) Tuesday (Aug. 12). Its visit is the last by the ATV line of spacecraft, which has been resupplying the orbiting lab since 2008.
12 August 2014, 09:36 AM ET
See photos of the mysterious tilted planet Uranus.
12 August 2014, 09:30 AM ET
Planck space telescope created a cosmic map of variations in the cosmic microwave background (CMB) radiation, but it may contain errors.
12 August 2014, 09:00 AM ET
A telescope on Earth has spotted huge storm systems brewing on the planet Uranus. Scientists using the Keck Observatory in Hawaii have recently seen a number of storms develop on the planet.
12 August 2014, 07:00 AM ET
The Perseid meteor shower should be most spectacular late Tuesday into early Wednesday, experts say. You can watch live feeds of the Perseids here at Space.com starting at 7 p.m. EDT Tuesday, courtesy of the Slooh Community Observatory and NASA.
11 August 2014, 05:12 PM ET
The Space Camp Hall of Fame, founded in 2007, added three new members to its ranks. The 2014 class includes astronaut Samantha Cristoforetti, former astronaut trainer Michelle Ham and the founder of Space Camp Turkey, Kaya Tuncer.
11 August 2014, 05:03 PM ET
The Perseid meteor shower will reach its peak overnight on Tuesday (Aug. 12) and early Wednesday morning.
11 August 2014, 04:35 PM ET
The New Horizons probe used its onboard telescope to record a video of Charon orbiting Pluto. The movie is composed of 12 individual images taken July 19-24 — one year before the spacecraft's flyby of the distant dwarf planet.
11 August 2014, 04:20 PM ET
All-Sky (ultra wide-field) cameras, in 6 U.S. locations, captured the incandescent death of multiple meteors from the annual shower (peaks August 11-13, 2014). Though post “Supermoon,” the still-bright satellite will reduce meteor strike visibility.
11 August 2014, 03:00 PM ET
To capture celestial conjunctions, you only need a tripod and camera.
11 August 2014, 12:00 PM ET
Space.com readers sent in their best shots of the August 2014 'supermoon.'
11 August 2014, 11:17 AM ET
NASA’s New Horizons snapped the big dwarf planet and its nearby moon for 5 days (July 19th-24th, 2014). Charon is 750 - 753 miles diameter, the largest known compared to the size of its host planet. Some consider Pluto-Charon a binary planet.
11 August 2014, 10:52 AM ET
Photographers around the world ventured outside Sunday (Aug. 10) to snap photos of the bright, full 'supermoon' rising in the night sky.
11 August 2014, 07:00 AM ET
Astrophotographer Miguel Claro took this image on July 27 from Monsaraz in the Dark Sky Alqueva Reserve located near Alentejo, Portugal. See how he did it.
10 August 2014, 09:07 AM ET
A 36-year-old NASA spacecraft will begin a new interplanetary science mission today (Aug. 10) when it makes a close pass by the moon. You can watch the lunar flyby live online at 1:30 p.m. EDT. Here's how to watch.
10 August 2014, 06:52 AM ET
The largest full moon of 2014 rises today (Aug. 10), and even if you don't have a clear view of the sky, you can still catch the cosmic action live online.
09 August 2014, 08:26 AM ET
NASA and other scientists are touting the August full moon on Sunday (Aug. 10) as the biggest full moon of 2014, but is it really that super? Space.com skywatching columnist Joe Rao takes a close look at the definition.
08 August 2014, 06:31 PM ET
Space.com’s Miriam Kramer talks with NASA’s Noah Petro about the Perigee Moon of 10 August 2014
08 August 2014, 06:04 PM ET
An amazing new video from NASA shows viewers the ups and downs of the first test of a system that could one day help the space agency land huge spacecraft on Mars or other planets.
08 August 2014, 04:30 PM ET
NASA has selected its latest batch of high-tech ideas for the future of space exploration, with the agency funding five bold concepts that range from an innovative asteroid-mapper to a colossal "orbiting rainbow" that could see objects in ultradeep space.
08 August 2014, 03:51 PM ET
Any space fan that hasn't already purchased a newly released LEGO kit featuring a female astronomer will have to wait a while longer before getting their hands on the toy.
08 August 2014, 02:07 PM ET
Planets with atmospheres are prime candidates for exploration. NASA deploys its Low-Density Supersonic Decelerator to find fuel saving ways to land heavy rovers and possibly people. Principal Investigator Ian Clark narrates this supersonic test run.
08 August 2014, 01:18 PM ET
Many skywatchers love August because the ever-reliable Perseid meteor shower peaks mid-month, but unfortunately, this year's usually brilliant meteor display may be spoiled by a bright full moon.
08 August 2014, 01:00 PM ET
NASA announced it has postponed two American spacewalks while it waits for new spacesuit batteries to be delivered to the orbiting outpost.
08 August 2014, 12:30 PM ET
NASA is already working on 3D printing rocket parts, a pizza maker and Hubble Space Telescope photos, but by the end of next month, a NASA engineer is expected to finish building the first space cameras made almost entirely out of 3D printed parts.