Lepa,
Yes, I noticed that Amazon was pretty silent on them, but they're extremely well rated on Goodreads. And actually, I just found preview pages on the World Books Inc website.
We've only read the Gravity one so far but I've flipped through some of the others and they look good. I don't have a science background (not even close!) so I can't vouch for the quality of the material myself, but we have friends who are both scientists and love reading these to their kids as well.
So far though, I think the Science Comics will be more fun to read.
