Scientists have found microbes frozen deep in the Antarctic ice sheets, in conditions very similar to the red planet's surface. Could life exist on Mars, in suspended animation?
- In 2001, a frozen ocean was discovered beneath the surface of Mars.
- Russian scientists and NASA have studied ice core samples from the Antarctic - the closest place on Earth to conditions on Mars.
- Microbes frozen in the Antarctic permafrost for millions of years came back to life when warmed in a lab.
- Scientists speculate that Mars' molten core may be hot enough to melt the ice and produce liquid lakes.