Here today, gone tomorrow; a bright layer of frost lining a crater wall is vanquished by the springtime sun -- and seen by a NASA Mars satellite high overhead.
The Martian surface is covered with a diverse array of landscapes and features, but this is one of the weirdest.
Although this crater rim is entering summer, its south-facing slopes are still festively frosted in ice.
The Martian landscape is peppered with features that look very alien and often cannot be easily explained.
As comet Siding Spring speeds away after its Martian encounter on Sunday, our armada of satellites have reported in to signal that they are OK.
The HiRISE camera on board NASA's Mars Reconnaissance Orbiter (MRO) has become the first instrument orbiting Mars to beam back images of comet Siding Spring's nucleus and coma. Continue reading →
Comet Siding Spring will make a heart-stopping close flyby of the Red Planet in Sunday, giving our Martian armada of robotic explorers a ring-side view of the spectacle. Continue reading →
A comet will give Mars a historically close shave next weekend, and NASA aims to be ready for the dramatic cosmic event.
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