Potential signs of ancient life in Mars rover photos

A careful study of images taken by the NASA rover Curiosity has revealed intriguing similarities between ancient sedimentary rocks on Mars and structures shaped by microbes on Earth. The findings suggest, but do not prove, ...

Mystery solved: Scientists trace source of Stonehenge boulders

Stonehenge, a Neolithic wonder in southern England, has vexed historians and archaeologists for centuries with its many mysteries: How was it built? What purpose did it serve? Where did its towering sandstone boulders come ...

Curiosity sees bizarre spikes on Mars

In August 2012, the Curiosity rover landed in the Gale Crater on Mars and began exploring the surface for indications of past life. The rover made some profound discoveries during that time, including evidence that the crater ...

Ancient river systems on Mars seen in unparalleled detail

Researchers have spent decades looking for evidence of ancient water on Mars. As technology has progressed, more evidence has come to light that rivers, lakes and even oceans were once abundant on the red planet.

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