![](http://static.ddmcdn.com/gif/recipes/mt-sharp-200-140912.jpg)
More than two years after touching down inside Gale Crater,
NASA’s Mars rover Curiosity has arrived at the place that drove
scientists to select the landing site at the outset – Mount Sharp.
![](http://static.ddmcdn.com/gif/recipes/mystery-object-200-140912.jpg)
Quasars are the brightest objects in the universe, and
display a mysterious diversity in their appearance that has puzzled
astronomers for more than two decades.
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