SpaceMars's gravitational pull may be strong enough to stir Earth's oceans An analysis of deep-sea drill cores suggests that Mars may have enough gravitational influence to shift sediment within Earth's oceans on a 2.4-million-year cycle News
SpaceMars used to have wet and dry seasons similar to ones on Earth The Curiosity rover has discovered hexagonal patterns in ancient mud on the Red Planet, which hints at cyclical wet and dry periods and boosts chances Mars once hosted life News