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Mashable

Mashable

NASA's Mars rovers had a gangbusters summer of rocks

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Three major discoveries happened within the span of seven weeks .

The Curiosity rover stumbled upon pure sulfur, its wheels crushed the material to expose a bed of yellow crystals.

Perseverance found a rock that scientists say has the most promising signs of ancient Martian life yet.

The discoveries have mounted pressure on NASA to solve the problems facing its proposed Mars Sample Return mission.

Anorthosite rocks are on the moon and in mountain ranges on Earth , generally considered rare in the solar system.

Some scientists think the rock may have formed in magma below ground and was later blasted to the surface by a giant impact.

Another discovery could bolster the idea that Mars ' early crust was more complex than once thought.

Back home, researchers could use advanced tools to search for complex organic molecules.