28 July 2014, 07:01 AM ET
The founding population of an interstellar colony should consist of 20,000 to 40,000 people, one expert says. Such a large group would possess a great deal of genetic and demographic diversity, giving the settlement the best chance of survival.
27 July 2014, 10:00 AM ET
The environment can produce sudden shocks to the life of our planet through impacting space rocks, erupting volcanoes and other events.
27 July 2014, 09:34 AM ET
Stargazers often overlook six minor meteor showers in the northern summer, but these celestial fireworks displays can be must-see events. Here's Space.com's guide to the minor meteor showers of Summer 2014.
26 July 2014, 01:26 PM ET
A volunteer crew of mock Mars explorers emerged from their Martian habitat Friday (July 25) after four months living inside a dome atop a Hawaiian volcano. See how the HI-SEAS 2 mock Mars mission crew lived and worked on a 'Red Planet.'
26 July 2014, 07:54 AM ET
One of the greatest pleasures for summer stargazers is viewing the splendor of the Milky Way. Despite the fact that we live in this vast island of billions of stars, most inhabitants of Earth have never seen the clouds of our Milky Way.
26 July 2014, 01:04 AM ET
Fix your gaze upon the moon.
25 July 2014, 04:43 PM ET
The countdown has begun for the liftoff of a space shuttle from Houston — and you are invited to take a front row seat. On Aug. 14, Space Center Houston's shuttle replica, the "Independence," will be hoisted by crane on top of NASA's Shuttle Carrier Aircr
25 July 2014, 04:36 PM ET
What was your favorite space news story of the last week?
25 July 2014, 04:04 PM ET
From a look again at the first footprints on the moon to the ISS view of Gaza, don't miss these amazing space images of the week for July 26, 2014.
25 July 2014, 03:37 PM ET
This NASA-produced video combines a greatest hits retrospective of past spaceflight with suggestions of humans-to-asteroid and Mars missions, plus animation of a yet unbuilt heavy lift launch vehicle.
25 July 2014, 03:13 PM ET
A Russian space capsule carrying a package of biological and materials research specimens, including geckos and plant seeds, has stopped responding to commands from Earth, the Russian space agency announced Thursday (July 24).
25 July 2014, 02:31 PM ET
When we were asked to design a new science-fiction entry in the "Sid Meier’s Civilization" series, it was one of those amazing moments when we realized we were going to have the chance to combine a love of game design with a love of science and space.
25 July 2014, 01:59 PM ET
The latest installment in Sid Meier's Civilization series takes mankind in search of a new home after the collapse of modern society on Earth. Pre-order the game here.
25 July 2014, 01:27 PM ET
The Hubble Space Telescope is an amazing example of space engineering that for nearly a quarter century has been a vital research tool and public relations boon for astronomy. As such, it is due time for a LEGO model of the observatory, fan Gabriel Russo
25 July 2014, 12:30 PM ET
German astronaut Alexander Gerst reflected on the grief he felt as he saw signs of the deadly Israel-Gaza conflict from the International Space Station.
25 July 2014, 11:27 AM ET
Curiosity has just crossed out of its landing ellipse, the 12- by 4-mile(19 by 7 kilometers) zone targeted for its August 2012 touchdown and is now moving toward an increasingly challenging landscape called the Zabriskie Plateau.
25 July 2014, 07:25 AM ET
As the world celebrates the 45th anniversary of Apollo 11's giant leap to the moon, some people are eyeing the celestial body's bounty of resources. But it's unclear at the moment who is allowed to extract and profit from the moon's resources.
25 July 2014, 07:17 AM ET
Using observations by NASA's Kepler and Spitzer space telescopes, researchers determined that the exoplanet Kepler-93b is 1.48 times the size of Earth, allowing scientists to conclude that the planet is very likely composed of iron and rock.
25 July 2014, 07:00 AM ET
Is the moon made of green cheese? Is it a hollow spaceship? Apollo 11 helped put these and other ideas to rest.
24 July 2014, 05:01 PM ET
Mercury and Venus will star in an early morning meet-up with the moon Friday (July 24). Both planets can be seen low in the east-northeast roughly 45 minutes before sunrise.
24 July 2014, 04:34 PM ET
The Hubble Space Telescope has created the most detailed map ever of the star-filled halo encircling Centarus A, the closest giant elliptical galaxy to our Milky Way galaxy. The map reveals a surprising amount of heavy metals along the halo's outer edge.
24 July 2014, 02:44 PM ET
The cloudier an alien planet is, the closer it can get to its star and still remain potentially life-friendly, researchers say. See what it means for life on planets even as hellish as Venus.
24 July 2014, 01:18 PM ET
It's commonplace to practice spacewalks underwater, but the latest crew living in an underwater lab plans to introduce a twist: a 10-minute communications delay with mission control.
24 July 2014, 12:06 PM ET
NASA's STEREO spacecraft captured imagery of recently discovered Comet Jacques on its nearest approach to the Sun as the object was moving at over 110,000 miles per hour. The comet can be spotted in the pre-dawn hours.
24 July 2014, 10:33 AM ET
Imagery from the Rosetta mission has been used to create a visualization of periodic comet 67P/Churyumov–Gerasimenko. The probe insert itself into orbit around the comet in the first week of August 2014.
24 July 2014, 10:20 AM ET
DigitalGlobe released satellite images of the Malaysian Airlines MH17 plane that was shot down over eastern Ukraine on July 17.
24 July 2014, 10:20 AM ET
The probe is 125 times smaller than its target, comet 67P/Churyumov–Gerasimenko. Rosetta will come within 62 miles of the surface in the first week of August 2014.
24 July 2014, 08:20 AM ET
NASA's Apollo 11 crew returned to Earth as heroes at the end of their successful manned moon landing mission. See how Neil Armstrong, Buzz Aldrin and Michael Collins splashed down in the Pacific Ocean and returned to the United States.
24 July 2014, 08:00 AM ET
"One small step for man, one giant leap for mankind." That sentence, uttered by NASA astronaut Neil Armstrong from the surface of the moon 45 years ago, signaled the dawn of a new age.
24 July 2014, 07:29 AM ET
Astrophotographer took this image of the moon, Venus, and the Pleiades on June 24, 2014 from Tucson, Arizona.
24 July 2014, 07:22 AM ET
While the Apollo 11 landing was on the cutting-edge of technology in 1969, today it's a demonstration of how much could be accomplished with so little.
23 July 2014, 09:32 PM ET
The United Arab Emirates has announced plans to launch a mission to Mars by 2021. A first for the Arab world, the mission and accompanying Space Agency are a big deal for the UAE – scientifically and politically.