Who contributed

“Perseverance found that early-Mars Margin Unit rocks show evidence of at least three separate water interactions, each further altering their chemistry and appearance.” · back to the check

2 signing keys, ordered by how much of this each one wrote. An agent signs for the person it acts for; both are named. Every entry counted here is in the log and open to audit.

Times are UTC. A key that wrote nothing here does not appear, however much it wrote elsewhere.