With missions from three nations slated to reach the Red Planet this month, 2021 could be the most enlightening year in Mars exploration history.
Earthlings have been sending probes and robots to and near Mars since the 1960s, and dozens have successfully captured images and data about the planet, gradually revealing its desert secrets. We learned about its geology and atmosphere, found ice, and found compelling evidence that Mars once existed Home of the blue oceans.
Now,…
