A NASA spacecraft in orbit around Mars has taken the first ever image of active avalanches near the Red Planet's north pole.
NASA has obtained the highest resolution terrain mapping to date of the moon's rugged south polar region, with a resolution to 20 meters per pixel.
The Ulysses spacecraft today is making a rare flyby of the sun's north pole. Unlike any other spacecraft, Ulysses is able to sample winds at the sun's poles, which are difficult to study from Earth.
An international team of astronomers has discovered that Neptune's south pole is much hotter than the rest of the planet.
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