18 May 2015, 01:34 PM ET
Three boulders balancing like ballerinas have been spotted on the surface of a comet by the Rosetta spacecraft. Only a small area on the surface of each rock is touching the ground, similar to "balancing rocks" seen on Earth.
18 May 2015, 09:00 AM ET
Smoke fills the cabin of a Star City Soyuz simulator and ESA astronaut Andreas Mogensen and Russian cosmonaut Sergei Volkov are forced to work through their contingency plans.
18 May 2015, 07:40 AM ET
A House appropriations subcommittee approved a spending bill May 14 that fully funds the Obama administration's overall request for NASA, but cuts commercial crew and space technology funds, adding it to planetary science and SLS.
18 May 2015, 07:00 AM ET
NASA and the European Space Agency are working together on a mission that would test out asteroid-deflection technologies. The Asteroid Impact and Deflection Assessment aims to slam a robotic probe into a space rock in 2022.
18 May 2015, 07:00 AM ET
Boeing has begun testing components of the CST-100 crew capsule's 'pusher abort system' at NASA's Langley Research Center in Virginia.
17 May 2015, 10:33 AM ET
A Russian cargo craft may have failed due to a problem with the rocket that launched it into space, and an astronaut explains how to "go" in space. Here are Space.com's top stories of the week.
17 May 2015, 09:17 AM ET
From the coast of Japan to a dragon selfie, don't miss these amazing space images of the week for May 17, 2015.
17 May 2015, 07:01 AM ET
The unmanned X-37B spacecraft is scheduled to launch Wednesday (May 20) at 10:45 a.m. EDT atop a United Launch Alliance Atlas V rocket from Florida's Cape Canaveral Air Force Station, kicking off the vehicle's fourth mission.
15 May 2015, 04:23 PM ET
If you've been a fan of NASA's website for more than a decade, you can thank an unlikely space geek: actor Tom Cruise.
15 May 2015, 11:01 AM ET
Settling Mars could help humanity escape and mitigate the problems our species is facing here on Earth, several science-fiction authors said.
15 May 2015, 10:30 AM ET
The House Science Committee approved four bills on commercial space topics during a lengthy markup session May 13 marked by partisan divides on a number of issues.
15 May 2015, 07:00 AM ET
NASA's New Horizons probe, which is set to perform the first-ever flyby of Pluto on July 14, has begun hunting for possible rings and undiscovered moons, in an effort to identify potential hazards near the dwarf planet.
15 May 2015, 07:00 AM ET
"Elon Musk: Tesla, SpaceX, and the Quest for a Fantastic Future," by tech journalist Ashlee Vance, will be released on May 19. But you can get a sneak peak at the book now, via a lengthy excerpt published Thursday (May 14) on Bloomberg.com.
14 May 2015, 03:17 PM ET
A preliminary investigation has revealed that the Progress 59 freighter's issues stemmed from a too-early separation of the Soyuz's third stage, officials with Roscosmos, Russia's federal space agency, announced Tuesday (May 12).
14 May 2015, 01:54 PM ET
A dense cloud of gas that astronomers are calling a 'cosmic dinosaur egg' appears to be on the cusp of birthing millions of stars. This may be the youngest example of an object called a globular cluster.
14 May 2015, 12:47 PM ET
See amazing images of the night sky and cosmos in SPACE.com's gallery of cosmic images posted in April 2015.
14 May 2015, 07:20 AM ET
NASA astronaut Scott Kelly says he's settling into his epic yearlong mission to the International Space Station, thanks in small part to the 'ISSPresso' coffee machine that arrived at the orbiting lab last month.
13 May 2015, 04:09 PM ET
Bill Nye (The Science Guy) wants you to be a part — and get a part — of a "revolutionary solar sailing spacecraft." The leader of The Planetary Society has started crowdfunding for LightSail, a citizen-funded flight by light.
13 May 2015, 03:17 PM ET
Brightman was scheduled to launch Sept. 1 on a self-funded 10-day mission to the orbiting lab aboard a Russian Soyuz spacecraft. But Brightman announced today (May 13) that she won't be making the trip to orbit.
13 May 2015, 11:35 AM ET
The astronaut who commanded the second-to-last space shuttle mission placed second on "Celebrity Jeopardy!," finishing behind an NFL football player. "Jeopardy made flying a rocket look easy!" said Mark Kelly.
13 May 2015, 08:41 AM ET
The suction fan on the Space Station potty is so loud that, well, everyone knows when you 'go.' Italian astronaut Samantha Cristoforetti explains how to turn on that fan and how-to use the International Space Station toilet.
13 May 2015, 07:00 AM ET
Dozens of students from 14 countries around the world came together recently to map out a manned mission to a captured asteroid in lunar orbit — a project very much like one NASA hopes to achieve by 2025.
12 May 2015, 08:08 PM ET
New Horizons took a series of images from April 25 through May 1. The shots mark the first time New Horizons has managed to resolve the extremely faint Pluto moons Kerberos and Styx, mission team members said.
12 May 2015, 04:07 PM ET
NASA and its international partners have delayed the landing of Terry Virts, Anton Shkaplerov and Samantha Cristoforetti until early June after learning new details about the recent crash of Russia's robotic Progress 59 cargo spaceship.
12 May 2015, 11:42 AM ET
A large piece of a space shuttle launch pad has landed on temporary display, where the public may catch sight of it. The gantry arm that for 30 years served as the walkway into the space shuttles has been moved outside at the Kennedy Space Center.
12 May 2015, 11:17 AM ET
The company that put the 'cup' in the first space cup of coffee now wants to put one in your hands. IRPI, the makers of the 'Space Cups' now used on the International Space Station, launched a crowdfunding campaign to produce the capillary-flow containers
12 May 2015, 11:06 AM ET
An inflatable drone could cruise the sulfurous skies of Venus next decade if Northrop Gruman can sell NASA on the mission.
12 May 2015, 10:49 AM ET
The Andromeda galaxy — the closest spiral galaxy to the Milky Way — is about six times larger and 1,000 times more massive than previously thought, new observations show.
12 May 2015, 07:30 AM ET
NASA is asking commercial launch providers to develop new systems specifically for "cubesats." These days, such bantam craft must generally piggyback aboard big rockets carrying much larger and more expensive satellites as their primary payloads.
12 May 2015, 07:25 AM ET
Aspiring astronauts got a glimpse of spaceflyers' snack options when Italian astronaut Samantha Cristoforetti showed off the International Space Station's pantry in a video uploaded by the European Space Agency on April 21.
11 May 2015, 05:05 PM ET
NASA's Dawn spacecraft has obtained the best views yet of the mysterious features, capturing them from a distance of just 8,400 miles (13,600 kilometers) in a series of images that mission team members combined to make a new Ceres video.
11 May 2015, 05:00 PM ET
Mars One CEO Bas Lansdorp and astronaut-selection chief Norbert Kraft dispute allegations by a former astronaut candidate that the colonization effort judges its applicants unfairly and is unable to finance itself.