21 September 2014, 11:12 PM ET
What was your favorite space news story of the last week?
21 September 2014, 10:40 PM ET
The Mars Atmosphere and Volatile Evolution (MAVEN) was inserted into Mars orbit on September 21st, 2014.
The minutes leading to engine cutoff are explained by the flight systems manager Tim Priser and mission control celebrates the announcement.
21 September 2014, 10:30 PM ET
After a 10-month journey through deep space, NASA's MAVEN probe arrived in Mars orbit late Sunday, on a mission to help determine why the Red Planet changed from a warm and wet place in the ancient past to the cold, arid world it is today.
21 September 2014, 09:30 PM ET
From some celestial sleuthing for a famous painting to stunning aurora photos, don't miss these amazing space images of the week for Sept. 21, 2014.
21 September 2014, 08:51 AM ET
The private spaceflight company's CRS-4 mission launched on September 21st, 2014. The unmanned Dragon capsule is carrying supplies, a 3D printer built by Made In Space and a new X-ray machine that will be used on the mice to measure bone density loss
21 September 2014, 07:30 AM ET
NASA's MAVEN spacecraft, which will study the atmosphere of Mars like never before, arrives at the Red Planet tonight (Sept. 21) and you can watch it live online. Watch the live webcast beginning at 9:30 p.m. ET (0130 GMT).
21 September 2014, 04:48 AM ET
Sick of long, hot summer days? Well, you're in luck. Astronomically speaking, autumn is about to begin.
21 September 2014, 03:40 AM ET
SpaceX plans to launch the fourth Commercial Resupply Services to the International Space Station from Cape Canaveral, Florida, on Sept. 21, 2014.
21 September 2014, 02:59 AM ET
NASA's Mars probe is expected to study the atmosphere of the Red Planet in amazing new detail.
21 September 2014, 02:30 AM ET
SpaceX's Dragon capsule soared into orbit on a delivery run to the International Space Station with more than 2.5 tons of astronaut supplies, science experiments and other cargo, including 20 mice and the first 3D printer built for space.
20 September 2014, 05:02 PM ET
NASA's MAVEN orbiter will arrive at Mars on Sunday, Sept. 21, after a 10-month voyage and you can watch it live online here starting at 9:30 p.m. ET (0130 Sept. 22).
20 September 2014, 08:19 AM ET
After streaking through space at mind-numbing speeds for 10 months, NASA's MAVEN probe and India's Mars Orbiter Mission (MOM) spacecraft will have to slam on the brakes if they hope to be captured into orbit Sunday and Tuesday.
20 September 2014, 03:41 AM ET
Mercury will be at its greatest elongation from the sun on Sunday (Sept. 21). Because of the tilt of the Earth's axis, this will place it high above the horizon in the Southern Hemisphere, but too low to be observed in the Northern Hemisphere.
20 September 2014, 03:00 AM ET
Thick clouds and rain forced the private spaceflight company SpaceX to postpone the planned launch of an unmanned Dragon cargo ship for NASA on Saturday (Sept. 20). The mission will now launch to the International Space Station on Sunday, Sept. 21.
20 September 2014, 01:15 AM ET
The AMS particle detector aboard the International Space Station has found more evidence of dark matter in cosmic ray data.
19 September 2014, 08:53 PM ET
NASA's Mars Atmosphere and Volatile Evolution (MAVEN) mission will take measurements with its Neutral Gas and Ion Mass Spectrometer (NGIMS) that have never been collected before. Dr. James Garvin speaks to Space.com's @TariqJMalik about the mission.
19 September 2014, 05:00 PM ET
The Royal Observatory Greenwich and BBC Sky at Night Magazine announced the winners of this year's astrophotography contest.
19 September 2014, 03:24 PM ET
A privately built SpaceX Dragon capsule is counting down to launch a big haul of cargo into space for NASA early Saturday (Sept. 20), and you can watch the liftoff live online. Here's how.
19 September 2014, 12:49 PM ET
Look toward the eastern sky during the predawn hours tomorrow, and, weather permitting, your eyes will immediately be drawn to the two brightest objects in the sky: the moon and Jupiter.
19 September 2014, 12:44 PM ET
The first-ever item to be 3D printed in space is being kept a well-guarded secret. The first 3D printer designed to operate in zero-g is set to launch to the space station to learn if 3D printing is viable in orbit. But what will it print first?
19 September 2014, 11:39 AM ET
India's Mars Orbiter Mission marks the country's first mission to the Red Planet and first entry into interplanetary spaceflight. The unmanned Mars Orbiter Mission, or MOM, will map the surface of the Red Planet.
19 September 2014, 10:00 AM ET
Dragon will lift off atop SpaceX's Falcon 9 v1.1 rocket at 2:16 a.m. EDT Saturday from Florida. Dragon will fly nearly parallel to the U.S. East Coast, so the launch should be visible in varying degrees along much of the Eastern Seaboard.
19 September 2014, 10:00 AM ET
The Chile-based Atacama Large Millimeter/submillimeter Array (ALMA) and other telescopes employed a sort of cosmic magnifying glass to look at details of a galaxy called H1429-0028, revealing that the object is actually two merging galaxies.
19 September 2014, 08:30 AM ET
The galaxy lies 11 billion light-years from Earth, so viewing it gives astronomers a glimpse into processes that occurred less than 3 billion years after the Big Bang that created the universe.
19 September 2014, 07:00 AM ET
Why do NASA and other space agencies keep sending robotic probes to Mars? Because the planet is close to Earth, may be able to support life and is a chief long-term target for human exploration.
19 September 2014, 01:00 AM ET
In what some call an act of cosmic cannibalism, the Andromeda galaxy will devour our Milky Way in about 5 billion years.
18 September 2014, 04:16 PM ET
For spaceflight to truly take off, public-private partnerships will be critical.
18 September 2014, 04:00 PM ET
A bright green aurora reflects off a glacial lake against the backdrop of a snow-covered mountain range in an incredible photo that took home first prize in an astrophotography competition.
18 September 2014, 03:29 PM ET
SpaceX is due to bring some strange things to the space station this weekend: the first 3D printer to leave the plant, a batch of mutant fruit flies, a wind-watching radar, 20 mice and a mouse X-ray machine.
18 September 2014, 02:46 PM ET
"The Interstellar Experience" lets players create their own solar systems, explore systems created by other users, travel through wormholes and fly past black holes in the Endurance, the spaceship featured in the upcoming film.
18 September 2014, 01:39 PM ET
The gas giant WASP-18b, 10X larger that Jupiter, orbits its relatively young parent star in just 23 hours. With the planet that close, the star’s magnetic field may be damped so much it is emitting x-rays at old age star rates.
18 September 2014, 01:16 PM ET
The secretive private spaceflight company Blue Origin and the launch provider United Launch Alliance announced Wednesday (Sept. 17) that they're teaming up on a new rocket engine venture. Today, you can watch the joint news conference.
18 September 2014, 11:30 AM ET
SpaceX's fourth cargo mission to the International Space Station includes some mice, the first 3D printer in space and other weird science. See our take on the cargo in this Space.com infographic.
18 September 2014, 10:42 AM ET
Volcanic eruptions can dramatically deepen the hue of lunar eclipses. But even with recent activity around the Pacific, the Oct 8th, 2014 passing of Earth's shadow is expected to be a normal coppery red.
18 September 2014, 06:00 AM ET
NASA's MAVEN probe is slated to arrive at the Red Planet around 9:50 p.m. EDT Sunday. The spacecraft's handlers are reporting no problems during the home stretch of its 10-month space journey.
18 September 2014, 06:00 AM ET
For the second time this year, a NASA jet used to ferry the space shuttles across the country has been put on public display. The youngest modified-Boeing 747 Shuttle Carrier Aircraft was towed to the Joe Davies Heritage Airpark in California.