Space
Deep Dive: The Largest Canyon in the Solar System is Still Tectonically Active
For many decades, scientists assumed that Mars was geologically inactive. While its surface is covered in features that attest to its volcanic past, all evidence seemed to indicate that Mars was geologically dead. This is consistent with the fact that Mars' crust has no tectonic plates and instead consists of a single plate, making it a "Stagnant Lid" planet.
Read the full story at Universe Today →This short summary only restates what the original publisher reported. Always check the source.