Valles Marineris: The Grand Canyon of Mars

Valles Marineris: The Grand Canyon of Mars

Mars will look good in Earth’s skies over the next few days – but not this good. To get a view this amazing, a spacecraft had to actually visit the red planet. Running across the image center, though, is one the largest canyons in the Solar System.Named...
Blood-red Nile River Seen From Space

Blood-red Nile River Seen From Space

The Nile River flows blood red in a new image released by the ESA, drawing comparisons to the biblical First Plague, in which the Egyptian waterway was turned to blood. But, the image from Sentinel-3A shows something else entirely, combining radiometer and colour data...