3 ms·

> it seems that they use an inertial measurement unit They should have just used GPS! /s

• zaxomi 5y ago
  Or GLONASS or Galileo. After all, the G stands for Global. ;)
  • frosted-flakes 5y ago
    The globe in those cases is Earth, not Mars.
    • zaxomi 5y ago
      I know. Didn't you notice the ";)" ? The comment was a joke in the same spirit as the parent comment.