wordpress counter


IT’S NOT JUST IN YOUR MIND!

Red sunset from green Earth, blue sunset from red Mars

[CLICK ON IMAGE FOR HIGH RESOLUTION, Left Image: Damia Bouic; Right Image: NASA, JPL-Caltech]

BlueSunHow different does sunset appear from Mars than from Earth? For comparison, two images of our common star were taken at sunset, one from Earth and one from Mars.

These images were scaled to have same angular width and featured here side-by-side. A quick inspection will reveal that the Sun appears slightly smaller from Mars than from Earth. This makes sense since Mars is 50% further from the Sun than Earth.

More striking, perhaps, is that the Martian sunset is noticeably bluer near the Sun than the typically orange colors near the setting Sun from Earth. The reason for the blue hues from Mars is not fully understood, but thought to be related to forward scattering properties of Martian dust. The terrestrial sunset was taken in 2012 March from Marseille, France, while the Martian sunset was captured last month by NASA’s robotic Curiosity rover from Gale crater on Mars.

SEE COMPLETE TEXT

Be Sociable, Share!




  • 'Plague of Biblical proportions' called opportunity for renewal
  • Perspective: Is coronavirus a sign from an exasperated God?
  • The new utopians, like the old, are plunging world into 'chaos and hatred'
  • 'Substantial emptiness': Goodbye right and wrong, hello Caliphate
  • 'For unto you is born this day in the city of David a Saviour'
  • The cultural roots of our secularized society: What is Judaism?
  • 'Good-bye America'