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Mission to Mars' north poloar region Phoenix Mars Lander
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Declining Sunshine for Phoenix Lander
  Declining Sunshine for Phoenix Lander

The yellow line on this graphic indicates the number of hours of sunlight each sol, or Martian day, at the Phoenix landing site's far-northern latitude, beginning with the entire Martian day (about 24 hours and 40 minutes) for the first 90 sols, then declining to no sunlight by about sol 300. The blue tick mark indicates that on Sol 124 (Sept. 29, 2008), the sun is above the horizon for about 20 hours.

The brown vertical bar represents the period from Nov. 18 to Dec. 24, 2008, around the "solar conjunction," when the sun is close to the line between Mars and Earth, affecting communications. The green vertical rectangle represents the period from February to November 2009 when the Phoenix lander is expected to be encased in carbon-dioxide ice.

Image NASA/JPL-Caltech/University of Arizona/Lockheed Martin
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Related Links
› NASA Phoenix site

› University of Arizona Phoenix site

› JPL on Facebook and Twitter

› Landing Press Kit (3Mb - PDF)

› Launch Press Kit (6.5Mb - PDF)

› Mission Fact Sheet (244Kb - PDF)

› NASA Mars Exploration site

› NASA/JPL Landing Blog

Other Missions at Mars
› Mars Exploration Rovers

› JPL's Rover News and Image

› Mars Reconnaissance Orbiter

› Mars Odyssey

› Mars Express

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