16 April 2014, 05:00 PM ET
Auroras dance, the Milky Way dazzles and lightning sparks in the night sky over some of the most rugged and beautiful terrain South Dakota, Wyoming and Utah have to offer as seen in this magnificent new time-lapse film.
16 April 2014, 12:30 PM ET
If your weather is clear, look toward the eastern sky tonight (April 16) about 10:30 p.m. your local time. You should see the bright moon rising, and just below and to its left will be a bright star-like object.
16 April 2014, 12:00 PM ET
See amazing images of the "blood moon" that appeared April 14-15, 2014.
16 April 2014, 11:03 AM ET
Noctilucent clouds are seeded by meteorites burning up in the atmosphere and form at Earth's polar regions. Researchers have found correlations with the appearance of these clouds and Earth's climate.
16 April 2014, 07:00 AM ET
A distant group of hot, young stars cause a cloud of hydrogen gas to glow a rosy red 7,300 light-years from Earth in the latest amazing view from a telescope in Chile.
16 April 2014, 06:32 AM ET
Explosive volcanic eruptions apparently shook and shaped Mercury's surface for billions of years, a new study finds, surprising scientists who had thought the phenomenon was impossible on the sun-scorched planet.
16 April 2014, 06:00 AM ET
The powerful radiation emitted from the stellar nursery of nebula Gum 41 illuminates the surrounding gas. ESO's MPG/ESO 2.2-meter telescope imaged the nebula through blue, green and red filters along with a special filter that pulls out the red glow.
15 April 2014, 05:15 PM ET
A fire ravaging the scenic city of Valparaiso, Chile, is visible from satellite on April 13, 2014. So far, 15 people have died in the fire, and thousands of homes have been destroyed.
15 April 2014, 03:39 PM ET
In a new image taken by astronauts on the International Space Station, the Grand Canyon stretches across the Colorado Plateau. Entrance to the National Park is free this weekend, April 19 and 20, 2014.
15 April 2014, 12:52 PM ET
A newly released documentary brings the hunt for ripples in the fabric of space-time — called gravitational waves — into focus, and you can watch it live on Space.com.
15 April 2014, 12:33 PM ET
The Tax Man cometh for Americans today (April 15), and not even astronauts in space can escape their earthly annual taxes. It's a safe bet American astronauts Rick Mastracchio and Steve Swanson on the International Space Station took care of their taxes.
15 April 2014, 12:31 PM ET
You would see is a solar eclipse (on the Earth-facing side). A 'Ring of Fire' would circle Earth and a reddish hue would blanket your abode. - Lunar Eclipse From Earth Time-Lapse: http://goo.gl/fBh9Wm
15 April 2014, 11:13 AM ET
One of NASA's most historic launch pads is now under new management. Launch Complex 39A at NASA's Kennedy Space Center in Florida is now under the control of SpaceX, the company led by billionaire entrepreneur Elon Musk.
Primary Section: spaceflight
15 April 2014, 10:47 AM ET
Stargazers around the world were awed by last night's total eclipse of the moon. Observers in a North America, South America, Hawaii and parts of Alaska got a spectacular show as the moon turned blood red during the first total lunar eclipse of 2014.
15 April 2014, 10:00 AM ET
The first total lunar eclipse of 2014 will occur overnight on April 14-15, and mark the beginning of a lunar eclipse tetrad - a group of four back-to-back total lunar eclipses. Space.com is offering complete coverage of the total lunar eclipse.
15 April 2014, 09:35 AM ET
On Tuesday (April 15), Space.com will premiere a new documentary "LIGO, A Passion for Understanding" by filmmaker Kai Staats, which follows scientists using the Laser Interferometer Gravitational-wave Observatories (LIGO) to hunt for gravitational waves.
15 April 2014, 09:15 AM ET
Griffith Observatory in Los Angeles, CA captured this time lapse imagery of the ‘Blood Moon’ lunar eclipse, from moments before Earth completely blocked the Moon's view of the Sun until full totality when the moon is fully bathed in ‘umbral shadow.’
15 April 2014, 09:00 AM ET
See images of the ringed planet from NASA's Cassini spacecraft in orbit around Saturn.
15 April 2014, 08:53 AM ET
Photographs taken by NASA's Cassini probe in April 2013 show a bright arc about 750 miles long and 6 miles wide at the edge of Saturn's outermost ring. This arc was probably created by the gravity of a small, icy object nearby — possibly a newborn moon.
15 April 2014, 05:30 AM ET
The moon took on an eerie blood-red hue early Tuesday during the first total lunar eclipse of 2014, a celestial sight that wowed potentially millions of stargazers across North and South America. See photos of the amazing total lunar eclipse here.
14 April 2014, 08:08 PM ET
Objects at the Solar System's edge could one day show scientists how life arose on Earth. That's because many of these objects could contain organics, carbon-based material that are ingredients of life.
14 April 2014, 06:31 PM ET
Many attendees of the Pluto Science Conference in July 2013 referenced it as a planet. NASA's New Horizon mission, that will deliver the first reconnaissance of Pluto in 2015, will help resolve the long debate.
14 April 2014, 05:00 PM ET
The spectacle is often more beautiful and interesting than one would think. During the time that the moon is entering into and later emerging from out of the Earth's shadow, secondary phenomena may be overlooked.
14 April 2014, 04:38 PM ET
The first total lunar eclipse of 2014 will occur overnight tonight, marking the start of an eclipse tetrad — four back-to-back total lunar eclipses — that will happen over the next 18 months.
14 April 2014, 04:30 PM ET
Tonight, if the weather is clear, favorably placed skywatchers will have a view of one of nature's most beautiful spectacles: a total eclipse of the moon.
14 April 2014, 04:21 PM ET
The company's unmanned Dragon spacecraft was scheduled to blast off today at 4:58 p.m. EDT from Florida's Cape Canaveral Air Force Station. But the attempt was scrubbed because Dragon's ride to space, a SpaceX Falcon 9 rocket, sprung a leak.
14 April 2014, 02:39 PM ET
NASA planetary scientist Dr.Shawn Domagal-Goldman explains why this phenomenon occurs and also why Earth will experience a tetrad or 4 lunar eclipses in nearly 18 months. Total Lunar Eclipse Skywatching Guide: http://goo.gl/TjZIzU
14 April 2014, 01:38 PM ET
The Falcon 9 rocket carrying a Dragon capsule bound for the Space Station, was lifted into its vertical position at its Cape Canaveral Air Force Station launch pad. Read more about re-usable tech: http://goo.gl/QUc4zC
14 April 2014, 01:16 PM ET
More than 900 people are working to achieve what Einstein thought impossible: Detection of gravitational waves from cataclysmic events billions of light years away. Until now, we've been deaf to our Universe. We're about to turn on our ears.
14 April 2014, 12:14 PM ET
A powerful scientific tool set to come online in 2015 could help scientists spot gravitational waves, ripples in space-time born from violent cosmic crashes light-years from Earth.
14 April 2014, 11:43 AM ET
For most U.S. states east of the Mississippi, tonight's total lunar eclipse will likely turn to be a total bust, while in contrast, much of the central and western United States are likely to get a fine view of the 'blood moon' in all its brilliance.
14 April 2014, 07:00 AM ET
It's an audacious plan, the odds of success are low, but SpaceX is going to do it anyway: The private spaceflight company founded by billionaire Elon Musk will launch a rocket with landing legs into orbit today, then try to bring part of it back to Earth.