Phoenix Welcomes in Sol 90 and Mars Winter

Phoenix sees the Sun dip below the horizon for the first time in 90 sols. It's going to get pretty cold here on in... (NASA/JPL/UA)
Phoenix sees the Sun dip below the horizon for the first time in 90 sols. It's going to get pretty cold out there... (NASA/JPL/UA)

This stunning image was taken by Phoenix on the 90th sol (Mars day) – or August 25th here on Earth – of its mission to the Red Planet. Until now the Sun has remained in the sky continuously due to the Mars Arctic summer, perfect for the landers solar panels to receive 24-hour solar energy. Sol 90 marks colder days and less sunlight for Phoenix as we push into Mars winter…
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