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27 May 2015, 05:02 PM ET
NASA's New Horizons probe, which will make the first-ever flyby of Pluto on July 14, captured the images with its long-range camera from May 8 through May 12, when the spacecraft was a bit less than 50 million miles from the dwarf planet.
27 May 2015, 03:24 PM ET
This image of the Bubble Nebula was taken by astrophotographer Jaspal Chadha from London.
27 May 2015, 02:24 PM ET
The jet of shredded matter blasting from elliptical galaxy NGC 3862's supermassive black hole is moving at more than 98% the speed of light.
27 May 2015, 02:15 PM ET
The U.S. Air Force has certified SpaceX’s Falcon 9 rocket to launch military satellites, completing a nearly two-year process and establishing a competitor to United Launch Alliance in the national security marketplace.
27 May 2015, 02:00 PM ET
Orbiting spacecraft of Mars have imaged over the past several years dark, finger-like features – now called 'recurring slope lineae' - or RSL for Martian short-hand. These dark flows have been observed at low and middle latitudes on Mars.
27 May 2015, 01:03 PM ET
Scientists using several telescopes, including NASA's Chandra X-ray Observatory, found evidence that a planet in an ancient cluster of stars on the edge of the Milky Way drifted too close to a white dwarf star and was ripped apart.
27 May 2015, 12:04 PM ET
The Canadarm2 remote manipulator was used to transfer the Permanent Multipurpose Module (PMM) to the forward port of the Tranquility Module. The shift was necessary to free up the port for commercial crew use.
27 May 2015, 12:00 PM ET
The House Armed Services Committee wants to quickly resurrect a shelved U.S. Missile Defense Agency concept to place several miniaturized kill vehicles atop a single interceptor to address a key weakness in the current U.S. missile shield.
27 May 2015, 10:00 AM ET
A dramatic new picture of young stars shows captures a cosmic "champagne flow" as the stars blow away hot hydrogen gas around them. The image was captured by the European Southern Observatory's Very Large Telescope in Chile.
27 May 2015, 09:23 AM ET
On March 28th, 2015, the Soyuz TMA-16M (Expedition 43) mission docked with the ISS. A camera aboard the spacecraft captured the rendezvous and docking.
27 May 2015, 07:05 AM ET
This bodacious pullulation of star creation was captured when the European Southern Observatory VLT set its sights on the Gum 19 nebula (a.k.a. RCW 34).
27 May 2015, 07:00 AM ET
NASA will launch a pair of tiny CubeSats toward the Red Planet in March 2016 to provide real-time landing coverage for the space agency's Mars InSight lander.
27 May 2015, 07:00 AM ET
The free Pluto Safari app, which came out last month, keeps tabs on NASA's New Horizons mission, counting down its July 14 close encounter to the second, and teaches users about the frigid, distant realm the spacecraft is exploring.
26 May 2015, 07:40 PM ET
Flight controllers will robotically move the Permanent Multipurpose Module from the orbiting lab's Unity module over to the Tranquility module. You can watch live here at Space.com beginning at 8 a.m. EDT Wednesday, courtesy of NASA TV.
26 May 2015, 05:02 PM ET
The Europa probe will carry supersharp cameras, a heat detector, ice-penetrating radar and a variety of other gear that will help researchers gauge the Jupiter moon's ability to support life as we know it.
26 May 2015, 04:30 PM ET
Science experiments done in microgravity or related to space flight can be found in a new scientific journal dedicated to these areas of research.
26 May 2015, 11:42 AM ET
Astronomers studying the globular star clusters orbiting the giant elliptical galaxy Centaurus A (NGC 5128) have stumbled upon a fascinating discovery — the clusters are too massive.
26 May 2015, 11:23 AM ET
The Permanent Multipurpose Module (PMM) will be moved to a nearby port to create a spare docking port for United States commercial crew transport by SpaceX, Boeing and possibly others in the future.
26 May 2015, 10:28 AM ET
Google has paid tribute to Sally Ride, the United States' first woman in space, with animated Doodles on its site. The whimsical scenes are timed to celebrate what would have been the late astronaut's 64th birthday.
26 May 2015, 10:06 AM ET
The Air Force spacecraft, known for its secretive United States national security missions, is built by Boeing. The company's director of experimental systems, Ken Torok, talks about what makes it unique.
26 May 2015, 07:12 AM ET
The House of Representatives passed a bill with a number of commercial space policy provisions May 21, despite objections from some Democratic members.
26 May 2015, 07:05 AM ET
Green rust could help living organisms on Mars extract energy from their environment. Scientists are working on ways of identifying green rust on the surface of the Red Planet.
25 May 2015, 09:00 AM ET
A scientist has raised questions about the latest detection of methane on Mars, suggesting that NASA's rover could be responsible for the mysterious burp. Highly unlikely, but not impossible, says the Curiosity team.
24 May 2015, 09:01 AM ET
The U.S. Air Force's X-37B space plane launched on another mystery mission, Russia's Proton rocket failed during a satellite launch and astronomers found the most luminous galaxy in the universe. Here's a look at Space.com's top stories of the week.
23 May 2015, 12:28 PM ET
What if the universe is not just matter and energy, but bits of information?
23 May 2015, 08:44 AM ET
If your local weather is clear tonight (May 23), check out the western sky around mid-twilight – about an hour after sunset. There, about half way up from the south-southwest horizon to the overhead point, you’ll see an eye-catching sight for the Memorial
23 May 2015, 07:00 AM ET
From the launch of the U.S. Air Force's X-37B space plane to new views of the odd bright spots on the dwarf planet Ceres, don't miss these amazing space images of the week for May 23, 2015.
23 May 2015, 07:00 AM ET
The Curiosity team mapped out a new route to some interesting rocks using images captured by Curiosity and NASA's Mars Reconnaissance Orbiter, which has been circling the Red Planet since 2006.
22 May 2015, 01:54 PM ET
The world of tomorrow is a pretty wonderful place … at least that's the sentiment of the makers of Disney's new epic: 'Tomorrowland.'
22 May 2015, 01:20 PM ET
The mysterious white spots on the surface of Ceres are definitely reflecting sunlight, scientists announced. You can submit your guess for what the spots might be in a poll on the Dawn mission website.
22 May 2015, 10:34 AM ET
A manned mission to Pluto may be far out, but it's not impossible.
22 May 2015, 07:17 AM ET
In the new Disney film 'Tomorrowland,' now in theaters, NASA provides the launch pad, literally and figuratively, for the movie's plot to unfold. 'To many of us on the film, NASA is close to our hearts,' said director Brad Bird.