Underground Mars explored using radar sounder

There's been plenty of news before about a certain planet's surface or images of it. But now, we have explored the underground of Mars using a radar sounder.

The European Space Agency (ESA)'s new Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) has looked a record 3.7 km beneath Mars' surface. Using a radar sounder from another planet has never been done before, so there could have been problems. The signal could have been distorted too much to be useful enough. However, no big problems occurred, and the experiment was a success.

Now, because of the radar sounder, scientists and astronomers know exactly how much water is on Mars.
With this success scientists and astronomers are hoping to be able to use this technology on other places, such as Titan, one of Saturn's moons. Apparently, radar sounders are very good for scanning icy places.

There is much data to be gained from using these types of radars. Hopefully, they will help us greatly in the future.