12 August 2015, 06:56 AM ET
Contamination of samples collected by NASA's Mars 2020 rover is all but certain, so scientists must determine just how clean they can feasibly be kept.
12 August 2015, 06:56 AM ET
A constellation of new NASA profile pages have gone live on Tumblr — including profiles for astronaut Peggy Whitson, the Juno mission to Jupiter and the Curiosity rover on Mars.
10 August 2015, 06:50 AM ET
New "Marstronauts" will head to a Hawaiian simulation facility for a year, starting Aug. 28. Officials with the Hawaii Space Exploration Analog and Simulation (HI-SEAS) mission announced the selection of the six scientists on July 29.
07 August 2015, 10:56 PM ET
Astronomers found the most far-flung galaxy ever discovered, NASA's Curiosity rover celebrated three years on Mars and Europe's Rosetta mission marked one year in orbit around a comet. Here are Space.com's top stories of the week.
07 August 2015, 07:00 AM ET
Saturn will shine during the month of August, and with luck stargazers will be able to catch a glimpse of Mars and Venus if they know when to look with this day-by-day breakdown.
05 August 2015, 01:40 PM ET
NASA's Swamp Works development team wants to put drones on Mars, distant moons and the airless, sunless landscapes on asteroids.
05 August 2015, 01:00 PM ET
Re-entry is ongoing for the crew that spent eight months in Hawaii simulating a Mars mission.
05 August 2015, 07:00 AM ET
Curiosity landed on the night of Aug. 5, 2012, pulling off a dramatic and unprecedented touchdown with the aid of a rocket-powered "sky crane" that lowered the 1-ton rover gently to the Martian surface via cables.
04 August 2015, 09:32 AM ET
Channels "carved into the steep-sided walls" of canyons in Mars’ Atlantis Chaos lowland plains, suggest vast amounts of water once flowed here. The Mars Express High Resolution Stereo Camera snapped cliffs, impact craters, basins weathered hills..
03 August 2015, 05:56 PM ET
After an accidental fire in December ripped apart The Mars Society's greenhouse at a facility in rural Utah, the group is asking the public to help raise money for a new one.
02 August 2015, 09:30 AM ET
It's a tech geek's dream in the underwater lab hosting four "aquanauts" for 14 days this month. Among the crew's need-to-have items is a cutting-edge Microsoft virtual-reality headset that one day will go to space itself.
30 July 2015, 07:09 AM ET
Life may have thrived in the oceans and lakes that once covered Mars — but some organisms may have survived long after the water dried up. Could scientists still find evidence of these last life-forms on Mars?
30 July 2015, 07:01 AM ET
Members of NASA's Mars Reconnaissance Orbiter (MRO) science team are asking the public to help them categorize strange features near the Red Planet's south pole for further study and analysis.
30 July 2015, 07:00 AM ET
NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft and India's Mangalyaan probe both began circling the Red Planet last September, bringing the total number of operational Mars orbiters to five — the most ever.
29 July 2015, 07:00 AM ET
Researchers are making strides on a radio telescope array that would be unfurled on the farside of the moon by an unmanned rover operated by astronauts hovering nearby at a gravitationally stable point in space.
28 July 2015, 07:30 AM ET
Measurements by Curiosity's rock-zapping ChemCam laser and another instrument revealed that a chunk of bedrock dubbed Elk contains high levels of silica and thus is a good candidate to preserve ancient organic molecules, if any exist in the area.
27 July 2015, 07:31 AM ET
An Arctic crater holds promise for figuring out how to spot something interesting on the moon or Mars, an astronaut says.
16 July 2015, 08:26 AM ET
NASA's Mars rover Curiosity has detected Red Planet rocks similar to Earth's oldest continental crust. The discovery suggests that ancient Mars may have been more similar to ancient Earth than previously thought, researchers said.
14 July 2015, 05:00 AM ET
The New Horizons probe's epic flyby of Pluto today (July 14) comes on a very special date in the history of space exploration: Exactly 50 years ago today, NASA's Mariner 4 spacecraft made the first flyby of Mars.
13 July 2015, 06:00 AM ET
The New Horizons probe's flyby of Pluto on Tuesday (July 14) will wrap up the initial reconnaissance of the solar system, an endeavor that began more than 50 years ago.
12 July 2015, 02:47 AM ET
NASA's New Horizons probe captured amazing images of Pluto, scientists revealed details about a proposed superpowerful space telescope and NASA announced its first four commercial-crew astronauts. Here are Space.com's top stories of the week.
07 July 2015, 07:30 AM ET
Mars may appear to be dry and desolate, but the Red Planet can be surprisingly humid — perhaps humid enough to support life, some scientists say.
06 July 2015, 02:00 PM ET
NASA's Mars rover Curiosity faces ongoing wheel wear and tear as it continues its trek across the rock-strewn Red Planet. Mission engineers are watching the wheels turn, keeping an eye on the dings and cracks that have begun to appear.
01 July 2015, 12:14 PM ET
NASA researchers are developing a glider, called Preliminary Research Aerodynamic Design to Land on Mars (Prandtl-m), for possible inclusion on a Mars rover mission in the 2022-2024 time frame.
30 June 2015, 01:01 PM ET
The European Space Agency’s ExoMars Rover will drill up to 2 meters (6 ft. 7 in.) into the surface; previous missions have only penetrated 5 centimeters (2 in.).
30 June 2015, 07:00 AM ET
The first living being sent to Mars by humans may not be some lucky astronaut, or even a monkey, but a microorganism like cyanobacteria, sent there to create oxygen for human explorers.
30 June 2015, 07:00 AM ET
Observations by NASA's MAVEN Mars orbiter suggest that shooting stars lit up the Red Planet's skies after the close flyby of Comet Siding Spring this past October.
26 June 2015, 12:09 PM ET
Barren wastelands are not as barren as they first appear.
25 June 2015, 06:55 PM ET
The next couple of decades could see astronauts go to many places: an asteroid, the moon, even Mars. But the current spacesuits used on the International Space Station will likely need replacing to get those exploration jobs done.
25 June 2015, 04:23 PM ET
The space agency will hold a workshop in Houston this October to kick off serious discussions about possible landing sites for NASA's first manned mission to the Red Planet, which the agency aims to launch by the mid- to late 2030s.
25 June 2015, 07:00 AM ET
The extreme environments of Earth could serve as a time machine to Mars' past, showing us how microbial life could have coped with the changes on the red planet.
24 June 2015, 05:00 PM ET
On the surface of Mars, researchers have identified deposits of impact glass created in meteorite collisions, which could potentially hold signatures of life.
24 June 2015, 07:00 AM ET
While previous research had confirmed the presence of beautiful "southern lights" on Mars, the new study predicts for the first time that the auroras of the Red Planet may be visible to the human eye.
23 June 2015, 07:05 PM ET
Astromice are helping people chart the course to Mars, and revealing that voyage's risks.
23 June 2015, 07:00 AM ET
During its 13.5 years in orbit, Mars Odyssey has spotted the first evidence of water ice on Mars, mapped the entire Red Planet surface in vivid detail, and coordinated the Spirit, Opportunity and Curiosity rovers' communications with Earth.
21 June 2015, 11:33 AM ET
Crashed comet lander Philae phones home. A dead satellite falls to Earth. Mars shows both methane-laced meteorites and a possibly icy past, and the moon's dust gets a source in the best of this week's space news.