07 June 2015, 10:00 AM ET
Scientists announced surprising discoveries about Pluto's moons, a spacecraft beamed home amazing images taken from a comet's surface, and the United Arab Emirates outlined its bold Mars plans. Here's a look at Space.com's top stories of the week.
07 June 2015, 09:31 AM ET
From up-close looks at Saturn's "spongy" moon Hyperion to photos of the first NASA spacewalk, which occurred 50 years ago this week, don't miss these amazing space images.
05 June 2015, 07:48 PM ET
The Jet Propulsion Laboratory (JPL) robot has 4 limbs and can become quite handy in disaster situations. The robot's mission (and how it could accomplish it) is the subject of the the latest "Crazy Engineering" episode from NASA JPL.
05 June 2015, 05:27 PM ET
The Jet Propulsion Laboratory's RoboSimian – an apelike robot that is able to map its environment in 3D – will participate in the DARPA Robotics Challenge Finals today and tomorrow (June 6).
05 June 2015, 01:53 PM ET
The nonprofit Planetary Society's LightSail spacecraft has not communicated with Earth since Wednesday afternoon (June 3), shortly after an apparently successful solar-panel deployment, mission team members said.
05 June 2015, 11:20 AM ET
Engineers are looking to automate some of the simple decision-making steps undertaken by Mars rovers and orbiters, which could dramatically improve the science they are able to perform in the search for habitable environments.
03 June 2015, 07:38 AM ET
The space agency's Low-Density Supersonic Decelerator test vehicle is scheduled to launch from the Hawaiian island of Kauai no earlier than 1:30 p.m. EDT on Monday (June 8), borne aloft by a giant balloon. You can watch the test live here at Space.com.
02 June 2015, 12:26 PM ET
When Alexei Leonov stepped out of his Voskhod 2 capsule on March 18, 1965, he became the first spacewalker ever.
02 June 2015, 11:34 AM ET
In August 2014, ESA's Rosetta Spacecraft will rendezvous with Comet 67P/Churyumov-Gerasimenko and deploy the Philae lander. See photos from the Rosetta comet probe.
02 June 2015, 11:07 AM ET
NASA is celebrating the first U.S. spacewalk 50 years ago with a new documentary on the history of humans working in their own private human-shaped spacecraft. 'Suit Up' is narrated by actor Jon Cryer and recounts five decades of spacesuit technology.
02 June 2015, 06:14 AM ET
NASA's Low-Density Supersonic Decelerator project will test new technologies for landing future robotic and human Mars missions, and returning large payloads to Earth.
02 June 2015, 01:59 AM ET
In aviation and in space, a drone refers to an unpiloted aircraft or spacecraft.
01 June 2015, 05:30 PM ET
Borg-like assimilation may not be an interstellar reality, but having a resilient software system is essential to ensure your starship can cope with any scenario in the depths of space.
01 June 2015, 02:37 PM ET
The Planetary Society's tiny LightSail spacecraft has recovered from an apparent software glitch in orbit and is on track to deploy its solar sail as early as Tuesday (June 2), mission team members say.
01 June 2015, 09:08 AM ET
Engineers at Aerojet Rocketdyne assemble the ‘RS-25’ a.k.a. Shuttle Main Engine engine at NASA's Stennis Space Center. First fired in May of 1975, four such legacy-design motors will power the core of the Space Launch System.
31 May 2015, 07:00 AM ET
NASA announced the science instruments for its mission to Europa, SpaceX was certified for U.S. military launches and a tiny solar-sailing spacecraft suffered a glitch in orbit. Here's a look at Space.com's top stories of the week.
30 May 2015, 11:13 AM ET
From a nebula's crimson heart to a dragon's-eye view, don't miss these amazing space images of the week for May 31, 2015.
29 May 2015, 03:39 PM ET
The U.S. Air Force's fourth mystery mission of its X-37B space plane launches on May 20, 2015. How long the mission will last, and its exact purpose, is a mystery. See photos from the mission here.
29 May 2015, 02:30 PM ET
The Hubble Space Telescope has been wowing space fans with amazing cosmic views for 25 years, but only because of repairs and upgrades by visiting astronauts. See the tools astronauts used to fix and repair the Hubble Space Telescope.
29 May 2015, 02:00 PM ET
NASA engineers talk about the specialized tools they developed to keep Hubble running for a quarter of a decade.
29 May 2015, 07:00 AM ET
Details about the X-37B spacecraft's current mission — known as Orbital Test Vehicle-4, or OTV-4 — are classified, but the satellite trackers' new observations are shedding some light on the vehicle's
27 May 2015, 06:56 PM ET
LightSail, a CubeSat designed and built by the nonprofit Planetary Society, stopped beaming data home on Friday (May 22), just two days after it blasted off along with the United States Air Force's robotic X-37B space plane.
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, 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.
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.
22 May 2015, 07:00 AM ET
Cubesats have pushed beyond the sphere of academia, becoming major tools for governments conducting a variety of missions and for companies earning revenues from space.
21 May 2015, 09:19 AM ET
In situations where sunlight is not available, like shadowed craters, its been a challenge to supply power to spacecrafts, landers and rovers. The space agency is looking into nuclear systems as an alternative.
20 May 2015, 04:23 PM ET
A Swedish university student has created a design for an "International Flag of Planet Earth" that could be planted on planets during future human exploration.
20 May 2015, 11:30 AM ET
The unmanned X-37B spacecraft is scheduled to blast off today (May 20) from Florida's Cape Canaveral Air Force Station during a four-hour window that opens at 10:45 a.m. EDT. You can watch it live beginning at 10:45 a.m. EDT.
20 May 2015, 11:30 AM ET
The unmanned X-37B spacecraft launched atop a United Launch Alliance Atlas V rocket today (May 20) at 10:45 a.m. EDT from Florida's Cape Canaveral Air Force Station. The booster also carried the Planetary Society's tiny LightSail to orbit.
19 May 2015, 07:00 AM ET
The United States Air Force's X-37B robotic space plane is scheduled to launch on its fourth mission this Wednesday (May 20). Just what it will be doing, and for how long, is a mystery.