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Why it's so special: These odd, fan-like features on the surface of Mars are geysers of gas and dust near the planet's south pole that are ... carbon dioxide ice accumulates near the surface.

"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...

This NASA Mars Reconnaissance Orbiter image, acquired on May 13, 2018, during winter at the South Pole of Mars, shows a carbon dioxide ice cap covering the region and as the sun returns in the spring, ...

Formations that look like jumbo-sized kidney beans (or blobs of chocolate syrup, depending on your palette) may be indicators ...

By imaging the dunes, scientists can figure out how much CO2 frost forms on the dunes during the Martian winter. When temperatures grow warmer in the spring, the frost sublimates, transitioning from a ...

Marking the North Pole is challenging, as it’s covered by moving sea ice, but its geographic location, also known as the true North Pole, is fixed. By comparison, the magnetic north pole is the ...