A fleet of ball-shaped rovers could drift across the Martian surface like tumbleweed, driven simply by the wind.

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Around 66 million years ago, the reign of the dinosaurs came to a fiery end. An asteroid about 7 miles (12 kilometers) wide, ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The dinosaur-killing asteroid that struck Earth around 66 million years ago was huge — around 7 ...