Once again the world is abuzz about water on Mars -- what's the fuss about this time?
NASA's Mars Reconnaissance Orbiter (MRO) has spotted its roving buddy Curiosity on the Martian landscape, but the rover seems to be missing its tell-tale tracks in the red planet's dirt.
After Curiosity dramatically touched down on Mars in 2012, it kicked up some dirt that still hasn't faded from view.
Like a coworker looking over her shoulder in the office, Curiosity has a Martian colleague checking up on her progress from high above.
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.
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