Ring of fire: Known as a 'prominence eruption', this is a loop of gas heated to an extremely high temperature. Twisted magnetic fields on the Sun's surface cause the gas to be shaped like this. This image was captured by the satellite on March 30
The Mars Express orbiter captured this striking view of rugged Martian landscapes extending from a mist-filled Coprates Chasma in the south, to Juventae Chasma and the outflow channels of Maja Valles in the north. Juventae Chasma, the box canyon near the center of the image, is about 100 km wide.