| Title | : | Twin of NASA’s Perseverance Mars Rover Now on the Move |
| Duration | : | 2 minutes, 21 seconds |
| Uploader | : | NASA Jet Propulsion Laboratory |
| Added On: | : | 06 October, 2020 |
| Views | : | 1.5M times |
| Likes | : | 0 |
| Source | : | YouTube |
While NASA's Mars rover Perseverance travels through space toward the Red Planet, its nearly identical rover twin is hard at work on Earth. The vehicle system test bed (VSTB) rover named OPTIMISM is a full-scale engineering version of the Mars-bound rove