General Atomic's new nuclear fuel was subjected to the maximum heat of a reactor for 20 minutes in the latest tests.

A new plan is forthcoming by the end of the year. Original article source: Cool rocks: NASA's Mars rover shows off its rock core collection ...

While Earth’s tectonic plates cause earthquakes when they collide or rub together — Mars has one solid plate of crust with a molten core inside, and fractures forming in the plate create ...

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