3 ms·

Is it possible that Mars is shrinking? That would explain an increased rotation rate.

• foota 3y ago
  Could also be elongating (as opposed to shrinking in every dimension or losing mass)
• vikingerik 3y ago
  This happens with Earth. An earthquake can displace mass towards the center, such that the rotation rate increases measurably, on the order of a fraction of a microsecond per day. In fact some of this is why we haven't needed leap seconds recently.
• deleted 3y ago
  [deleted]