Bright, frosty polar caps, and clouds above a vivid, rust-coloured landscape reveal Mars as a dynamic seasonal planet in this NASA/ESA Hubble Space Telescope view taken on 12 May 2016, when Mars was 50 million miles from Earth. The image reveals details as small as 20 to 30 miles across. On 30 May, Mars will be the closest it has been to Earth in 11 years.
Two-tone mineral veins at a site NASA’s Curiosity rover has reached by climbing a layered Martian mountain offer clues about multiple episodes of fluid movement. These episodes occurred later than the wet environmental conditions that formed lake-bed deposits the rover examined at the mountain’s base.
Nitrogen, in the form of nitric oxide (one nitrogen atom and one oxygen atom), has been detected for the first time on the surface of Mars by a team of researchers using the Sample Analysis at Mars (SAM) instrument suite aboard NASA’s Curiosity rover, adding to the growing speculation that life could have once flourished on ancient Mars.