Nightly Changes in Mars' Atmosphere Solves Methane Mystery?

Nightly Changes in Mars' Atmosphere Solves Methane Mystery?
NASA/JPL-Caltech via AP

Methane released in Gale crater stays in Gale crater. An overnight change in the Martian atmosphere could hold the gas close to the ground until morning, explaining why the Curiosity rover caught a whiff of methane while an overhead orbiter found none.

The theory offers “a way for the two measurements to live in harmony with each other,” says planetary scientist John Moores of York University in Toronto.

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