By Leah Crane
A NASA engineer stands beside the Mars 2020 rover
Leah Crane
What youre doing today never happens, says NASAs David Seidel as the van rumbles along. We are headed to the Spacecraft Assembly Facility at NASAs Jet Propulsion Laboratory (JPL) in California, where a group of journalists will be allowed to enter the clean room, a place members of the public are almost never allowed to go.
Were here to see the Mars 2020 rover, which is scheduled to launch to Mars in July 2020. But before we can get up close and personal with the spacecraft, …