I wish he was right, but the reality is that Mars travel, for people, is very risky right now and all the risks are not controlled enough (yet) to allow safe travel in four years.”

SpaceX CEO Elon Musk announced on his social-media site X on Sunday that the company plans to send five uncrewed Starships to Mars within the next couple of years. Musk said the company has to wait for the next Earth-Mars launch window before sending the missions.

Dr. Scott Solomon, a biologist from Rice University, is throwing a big wet blanket on Elon Musk's plans to have humans colonize Mars. The Sun reports that