NPR reports that Curiosity’s SAM instrument, which reads the composition of samples of rock, dirt and other spacey materials has found something especially “exiting” but wants to be sure of the info.

Grotzinger is quoted to say a soil sample in the SAM has the revelation.

“This data is gonna be one for the history books. It’s looking really good,” he says.

NASA is careful not to jump the gun on new information after the SAM sensor found methane, which is produced from living things meaning there was life on Mars, in an air sample, but it didn’t appear in later tests.

It’s reported we’ll find out in several weeks what Grotzinger’s talking about in several weeks.

Image via NASA/Getty