Almost a 5. Definitely one of the best graphic novels I've read.
I appreciate the premise of the four super scientists with different personalities and ways of looking at the world. The unique way the story is told - magazine articles, interviews, flash backs, etc., to supplement the traditional comic book method - is a treat.
If there's a flaw, it's that I found the space ship crew less interesting than the scientists. The crew's story arc is probably appealing to the typical comic book reader though.