Instead, we get the critters at right. Here’s how PZ Myers, biologist and wet blanket, explains the big discovery….
It’s an extremophile bacterium that can be coaxed into substiting arsenic for phosphorus in some of its basic biochemistry. It’s perfectly reasonable and interesting work in its own right, but it’s not radical, it’s not particularly surprising, and it’s especially not extraterrestrial. It’s the kind of thing that will get a sentence or three in biochemistry textbooks in the future.
So… all the rumors were overblown. sigh. But if you’re still wondering what to make of NASA’s press conference — and some of it was kinda cool once you got past the initial disappointment — Myers’ blog post on the subject is a great read.