Latest Reull Vallis Stories

Lee Rannals for redOrbit.com – Your Universe Online The European Space Agency's (ESA) Mars Express has offered up a high-resolution photo of a river-like structure on Mars. The spacecraft used its high-resolution stereo camera last year to snap an image of Reull Vallis on the Red Planet. Reull Vallis is a river-like structure believed to have formed when running water flowed in the distant martian past. The ancient river bed cuts a steep-sided channel through the Promethei Terra...