The Perseverance mission has collected samples that hold life-friendly molecules “in pretty much every rock”
Scientists collaborating on the mission also say the rock samples, which the rover has cached in tubes for a future return to Earth, have the right chemical recipe toThe new Perseverance research is detailed in three extensive studies published Wednesday, one in the journal Science and two in the journal Science Advances. The
“Crucially, conditions in the rock during each time that water migrated through it could have supported small communities of microorganisms,” lead author Michael Tice, a geologist at Texas A&M University, said in an email. In a subsequent interview, he added, “We’re not going to know until we get the samples back to Earth.”
Still, Mars is front and center in NASA’s search because it has many favorable traits. Mars probably was far more Earthlike about 3 billion years ago, with warmer and wetter conditions. Life may have once existed on Earth and Mars simultaneously, and it is possible that it originated on Mars and spread to Earth via meteorites.
The volcanic rocks are not a disappointment, though, because they preserve loads of information about the Martian past, including the presence of organic molecules, scientists said.
Scientists point to something Mars lacks today: a global magnetic field like Earth’s. Such a field protects
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