11 January 2015, 09:00 AM ET
Getting a handle on what rocky worlds in our solar system would look like from afar will give us a basis for comparison as we seek out distant, habitable exoplanets.
09 January 2015, 07:00 AM ET
Intriguing features photographed by NASA's Mars rover Curiosity probably don't have a biological origin, mission team members say.
07 January 2015, 11:12 AM ET
A careful study of images taken by the NASA rover Curiosity has revealed intriguing similarities between ancient sedimentary rocks on Mars and structures shaped by microbes on Earth. The findings suggest, but do not prove, that life may have existed ear
06 January 2015, 10:30 AM ET
A tiny, self-contained greenhouse has been selected to fly on the robotic lander that Red Planet colonization effort Mars One intends to launch in 2018, group representatives announced today (Jan. 5).
05 January 2015, 09:49 AM ET
Becquerel crater, in the Red Planet's Arabia Terra region harbors sulphate-bearing deposits, likely left behind by flowing water. Darker areas are dust that blew in from the north. ESA’s Mars Express HRSC took the images used to make this animation.
02 January 2015, 07:00 AM ET
How habitable was Mars in the past, and does it have signs of life? This is part of what Mars 2020, a successor to Curiosity, will examine when it arrives on Mars.
31 December 2014, 10:40 AM ET
Problems with NASA's Mars Exploration Rover Opportunity's flash memory have intensified over recent weeks, so Discovery News Space Producer Ian O'Neill spoke with NASA Project Manager John Callas about the severity of the glitches.
26 December 2014, 07:07 AM ET
Mars, like Earth, experiences "macroweather" — atmospheric effects that lie in between short-term weather and long-term climate. The discovery could shed light on the atmospheres of Earth and other planets in the solar system and beyond.
18 December 2014, 10:03 AM ET
NASA's Mars rover Curiosity has made some amazing recent discoveries on the Red Planet. The Discovery Channel documentary 'Red Planet Rover' will chronicle those finds tonight at 10 pm ET/PT.
17 December 2014, 07:00 AM ET
The discovery is not evidence that life exists, or has ever existed, on Mars, researchers stressed. But it does mark the first time that organics have been confirmed inside Red Planet rocks, and it checks off a chief goal of the rover team.
16 December 2014, 02:50 PM ET
Although methane had been discovered before from space, NASA's Curiosity rover made the first in-situ discovery of rapid changes in methane concentration from the surface of Mars.
16 December 2014, 02:08 PM ET
The Mars Science Laboratory's Tunable Laser Spectrometer (TLS) instrument was used to confirm the presence of methane on several occasions during the rovers' study of the Red Planet.
16 December 2014, 01:35 PM ET
NASA's Curiosity rover has recently made a surprising find on Mars that could help scientists get one step closer to figuring out if the Red Planet has ever supported life.
16 December 2014, 11:40 AM ET
New findings suggest that glaciers played a role in carving out Valles Marineris, the Martian 'Grand Canyon.'
12 December 2014, 05:08 PM ET
Having successfully splashed down after its first spaceflight, NASA's Orion spacecraft is set to launch onto the big screen in a large-format 3D film. 'Journey To Space' tells the true story of what the next chapter of space exploration will bring.
11 December 2014, 02:01 PM ET
The presence of liquid water is just one of many factors that researchers need to take into account when investigating the past or present habitability of Mars or any other cosmic body, researcher Pamela Conrad says.
11 December 2014, 07:30 AM ET
The image shows a geological phenomenon known as "cross-bedding" within Whale Rock, part of an outcrop at the base of Mount Sharp, a mountain that rises 3.4 miles into the sky from the center of Mars' huge Gale Crater.
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.