NASA has picked out three potential landing sites for its Mars 2020 rover

As NASA continues to develop its next Mars rover, the space agency also has the important job of figuring out where to put the vehicle on the Red Planet. It’s a big decision since the future robot — known as the Mars 2020 rover — will be tasked with preparing samples of Martian dirt that could potentially be returned to Earth. So NASA wants to pick an area with a variety of different rocks and soils to study.
After years of discussion, the space agency has narrowed down the lis