What appears to be an underground lake on Mars has been found, thanks to an ice-penetrating radar from the European Space Agency’s Mars Express orbiter, according to Science News.
The lake was discovered on the planet’s south pole, where NASA’s Mars Reconnaissance Orbiter also searched for liquid water, coming up with nothing.
“It’s a big mystery, we’d love to figure it out,” planetary scientist, Isaac Smith, from the Planetary Science Institute said.
The discovery was announced months ago, but scientists are still unclear about how the lake could be undetectable to NASA’s orbiter.
Source: IGN.com An Underground Lake on Mars Is an Interesting Puzzle for Scientists