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Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
Curiosity's methane measurements occurred over four-and-a-half Earth years, covering parts of three Martian years.
The rock in Curiosity's image resembles previous meteorites found on Mars that have a dark, shiny look to them.
Source: https://www.cnet.com/science/space/goofy-mars-rock-spotted-by-nasa-rover-might-be-a-meteorite/