Mars

On May 12, 2016, Mars was 0.53 astronomical unit (50 million miles or 80 million kilometers) away from Earth.

Data were provided by the HST proposal 14499 taken by the Hubble Heritage Team: Z. Levay (PI), M. Mutchler, J. Mack, R. Avila, C. Christian, L. Frattare, J. Green, C. Martlin, S. Meyett, and S. Porter (STScI/AURA), K. Noll (NASA/GSFC), J. Bell (ASU), and M. Wolff (Space Science Institute). Additional data processing support was provided by G. Bacon (STScI).

F275W (275nm), F410M (410nm), F502N (502nm), and F673N (673nm)

NASA, ESA, and L. Frattare (STScI)

This image is a composite of separate exposures acquired by the WFC3/UVIS instrument. Several filters were used to sample various wavelengths. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are:

Purple: F275W (275nm)
Blue: F410M (410nm)
Green: F502N (502nm)
Red: F673N (673nm)