10 December 2014, 08:00 AM ET
The president congratulated Orion's chief engineer and her team for Friday's successful test flight, which marked the farthest a human-spaceflight vehicle has traveled since the end of NASA's Apollo program in 1972.
10 December 2014, 07:00 AM ET
Assembly, test and launch operations began recently for NASA's InSight lander, which aims to study the interior of Mars to learn more about how the solar system's rocky planets formed 4.5 bilion years ago.
08 December 2014, 03:31 PM ET
Curiosity has found evidence that the 96-mile-wide (154 kilometers) Gale Crater, which the rover has been studying since August 2012, hosted a large lake long ago. Runoff into this lake eventually built up Mount Sharp, mission scientists say.
07 December 2014, 08:00 AM ET
The mysterious circular feature, which was imaged by NASA's Mars Reconnaissance Orbiter, measures about 1.2 miles (2 kilometers) wide. It possibly had a volcanic origin, NASA officials say.
06 December 2014, 12:11 AM ET
What is so important about Mars, in particular, that ESA supports not one but two missions and wants to send humans to the Red Planet?
05 December 2014, 11:35 AM ET
NASA's new Orion spacecraft, a deep-space capsule, survived an epic test flight on Friday (Dec. 5) paving the way forward for manned missions to asteroids and even Mars.
05 December 2014, 07:41 AM ET
A Canadian company wants to land a couple of robots on Mars in late 2018, but to do so, it might need your help.
04 December 2014, 05:10 PM ET
The way we define life has consequences for the search for life on other worlds such as Mars, Jupiter's moon Europa and the Saturn satellite Enceladus.
04 December 2014, 01:55 PM ET
NASA’s new Orion crew capsule was built with capabilities to travel further than any humans have ever been. NASA engineer Nujoud Merancy explains explains what it can do.
03 December 2014, 06:35 PM ET
A debate has long raged among scientists over the possible existence of life on Mars, and a new study is adding fuel to the fire.
03 December 2014, 05:17 AM ET
China is ramping up its space activities, with plans for a large space station as well as ambitious missions to the moon and Mars in the coming years.
03 December 2014, 12:00 AM ET
The flight will mark the farthest journey of a human-spaceflight vehicle since 1972, when the last of NASA's Apollo moon missions flew. But the agency envisions Orion eventually getting astronauts to asteroids and Mars.
02 December 2014, 11:00 AM ET
Mars One has selected 10 finalists from dozens of proposed payloads submitted by university groups around the world. One of these experiments will be chosen to fly on Mars One's robotic lander mission in 2018 — and the public will pick the winner.
02 December 2014, 11:00 AM ET
With luck, skywatchers can catch sight of the five brightest planets in the sky this month. Mercury, Mars, Venus, Saturn and Jupiter should all be on display.
29 November 2014, 08:00 AM ET
A robot that can scale the faces of steep cliffs might one day help explore Mars and find signs of life.
28 November 2014, 07:24 AM ET
These amazing images show the planet Mars passing below two nebulas. Astrophotographer Derek Demeter took the images from the Stardust Ranch in Okeechobee, Florida.
25 November 2014, 07:23 AM ET
The space-funding company Uwingu will send nearly 90,000 messages to Mars this Friday (Nov. 28) to help celebrate the 50th anniversary of the launch of NASA's Mariner 4 probe, the first successful Red Planet mission.
21 November 2014, 04:03 PM ET
When at Mars, bring a 3D printer.
21 November 2014, 02:27 PM ET
From a dome in Hawai'i, six astronaut hopefuls are running an 8-month experiment into what life would be like on Mars.
21 November 2014, 02:05 PM ET
I know what you’re thinking: this is not a normal day-in-the-life of a mineralogy graduate student. And you’re right about that! I never dreamed that my love of rocks, crystals, and the atomic scale would lead me to be part of a NASA mission.
20 November 2014, 07:00 AM ET
Curiosity continues to investigate an outcrop at the foot of Mount Sharp dubbed Pahrump Hills, which the robot reached in September after a 14-month trek.
13 November 2014, 09:00 AM ET
The origins of organic matter found by Mars lander missions have long been debated, but a new study suggests a way to find out whether these chemicals of life came from the Red Planet or elsewhere.
11 November 2014, 07:46 AM ET
Get up early or stay out late to see some of the brightest planets in the night sky this month. The elusive planet Mercury begins November with its best morning apparition for 2014.
06 November 2014, 03:00 PM ET
The first samples collected by NASA's Mars rover Curiosity at the foot of a huge Martian mountain have provided some vital ground-truthing of data gathered from orbit.
31 October 2014, 07:06 PM ET
Mars colonization moves forward, pushed by visionaries and pragmatists alike.
29 October 2014, 02:01 PM ET
NASA should scrap its bold asteroid-capture mission idea and instead launch a comprehensive search for near-Earth asteroids to visit in their native orbits, MIT professor Richard Binzel says.
27 October 2014, 03:14 PM ET
The moon and Mars will create a pretty tableau along the southwest horizon at dusk tonight and tomorrow.
23 October 2014, 04:30 PM ET
Apollo 11 moonwalker Buzz Aldrin wants to send people on a trip to Mars, and he doesn't want them to come home — at least not at first.
20 October 2014, 01:51 AM ET
Without proper regulation, the moon risks becoming an extra-planetary Wild West.
19 October 2014, 02:30 PM ET
Comet Siding Spring came within just 87,000 miles of the Martian surface at 2:27 p.m. EDT today — about one-third of the distance between Earth and the moon. The comet barreled by at 126,000 mph relative to the Red Planet, NASA officials said.
18 October 2014, 09:11 PM ET
NASA scientist Dr. Michelle L Thaller tells Space.com's @MiriKramer what you need to know about comet Siding Spring's fly-by, its implications for the Red Planet and how humans will be able to observe it. Full Coverage: http://goo.gl/0cnCEb
18 October 2014, 07:01 AM ET
Comet Siding Spring — unknown and undiscovered until 2013 — will zoom past the Red Planet Sunday afternoon (Oct. 19) in an encounter that could help scientists better understand how the solar system came to be.
17 October 2014, 07:38 AM ET
In a rare celestial event, a comet will pass closer to Mars than the moon is from Earth on Oct. 19, 2014. See how the Comet Siding Spring flyby of Mars works in this Space.com infographic.
17 October 2014, 07:30 AM ET
Comet Siding Spring will zoom within 87,000 miles of Mars at 2:27 p.m. EDT on Sunday (Oct. 19). Scientists will observe the flyby using the fleet of spacecraft already at Mars, studying the comet and any effects its dust has on the planet's atmosphere.
16 October 2014, 07:00 PM ET
Comet Siding Spring C/2013 A1 will fly within 87,000 miles of the surface of the Red Planet, causing NASA to alter the positions of their satellite fleet to evade the debris.
16 October 2014, 07:00 AM ET
A new analysis has pinpointed a few purported problems with the blueprint laid out by the Netherlands-based nonprofit Mars One, which aims to land four people on the Red Planet in 2025 as the vanguard of a permanent settlement.