The discovery could have significant implications in the search for signs of past life on the Red Planet.
Methane is one of the potential markers to indicate that life once existed on the red planet.
A new study suggests that the Red Planet could have supported subsurface microbes.
Is the briny sludge teeming with tiny organisms?
Scientists found that Mars's crust formed much earlier than previously thought.
The rover has discovered ancient organic material that may be biological in origin, although this has not yet been proven.
These rocks formed at the bottom of ancient lake beds between three and four billion years ago, when the Martian surface was abundant in water and its climate was warmer.
The ExoMars Rover will drill more than six feet underground to search for organic material.
Laguna Caliente in Costa Rica is one of the harshest environments on Earth for life.
They might be a ready-made water source for explorers.
It's the very latest in spa treatments for planets that just want to be pampered.
NASA already explained the "concretion" phenomenon when a similar image made the rounds in 2014.
Scientists at the NASA Goddard Space Flight Center called the flight a "breathtaking ride."
U.S. Representative Dana Rohrabacher questioned space experts about life on the planet.
Analysis of rocks from the Gale crater show climate change on the Red Planet over billions of years.
If we can overcome our biological flaws—our genes and our inability to make rational choices—our days on this planet may not be numbered after all.
Microbial life was inhabiting the land up to 580 million years earlier than previously thought, and originated in an ancient hot spring.
The legendary prog-rock keyboardist talks about working with David Bowie, touring with fellow Yes alumni Jon Anderson and Trevor Rabin, and his animal rescue work.
And the ice formations would be ideal locations for finding life, if it exists.