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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.
18 September 2014, 06:00 AM ET
As the liquid on Titan interacts with the crust of the moon, changes in their composition could reveal processes from deep underground.
18 September 2014, 06:00 AM ET
Experts will debate different definitions of the term "planet" during a live webcast tonight at 7:30 p.m. EDT. Watch it live here on Space.com.
18 September 2014, 12:23 AM ET
This stunning space wallpaper from the VLT Survey Telescope at ESO’s Paranal Observatory in northern Chile shows the globular cluster Messier 54. This cluster looks very similar to many others, but it has a secret.
17 September 2014, 05:44 PM ET
Rocketing through gloomy skies with a payload clouded in a veil of secrecy, a United Launch Alliance Atlas 5 rocket fired away from Cape Canaveral on Tuesday to deploy a satellite thousands of miles above Earth.
17 September 2014, 04:00 PM ET
NASA astronauts should be able to hitch a ride to space aboard space taxis built by private two companies in the next three years, and reactions are strong.
17 September 2014, 03:50 PM ET
The history of the Milky Way has a new wrinkle. Scientists used radio telescopes like the Atacama Large Millimeter/submillimeter Array — a vast array of receivers in Chile — used to probe galaxies within 40 million to 600 million light-years from Earth.
17 September 2014, 03:44 PM ET
United Launch Alliance (ULA) and the private spaceflight company Blue Origin are going to fund the development of Blue Origin's new BE-4 liquid rocket engine, representatives with both companies revealed today (Sept. 17).
17 September 2014, 02:29 PM ET
The Mars Atmosphere and Volatile EvolutioN (MAVEN) mission will study how the Mars’ atmosphere has changed over time, from a highly elliptical orbit peaking at more than 3800 miles from the surface.
17 September 2014, 02:28 PM ET
In the 1998 movie 'Armageddon,' an asteroid the size of Texas threatens to collide with Earth in 18 days. Despite its entertainment value, the film is fantastically inaccurate, astronomer Phil Plait said.
17 September 2014, 01:51 PM ET
This European instrument will split the view of the night sky into 16 'tiled' images, giving astronomers a 6.7° field of view. That’s 13X the size of the Moon, as seen from Earth.
17 September 2014, 01:18 PM ET
Astronomers have found that a small, nearby galaxy may harbor a giant secret — a supermassive black hole at its heart equal in mass to about 21 million suns.
17 September 2014, 01:00 PM ET
M60-UCD1 is five hundred times smaller than our Milky Way Galaxy, yet its core contains a singularity 5 times larger. This black hole comprises 15% of the little galaxy’s total mass of about 140 million Suns.
17 September 2014, 10:50 AM ET
Spotting the Milky Way on dark, cloudless nights can be a challenge for anyone, but trying to see it through the haze of light pollution in a crowded city is nearly impossible.