Mars, the fourth planet from the sun and Earth’s closest planetary neighbor, has a relatively thin atmosphere and no magnetic field to protect it from radiation. That makes Martian weather much more extreme than that of Earth. Mars is bombarded ...
Thinking of life on Mars might be quite the challenge. And not only for us but for scientists, too. New data, however, show parts of Mars that have been habitable for thousands or even a million years. How is this ...