The "experts".
I'm sure they are real, I haven't looked them up. But this show gives off an Ancient Aliens vibe. It gives a name and says they're an astronomer, but it doesn't say what organization or school they work at.
shareI've been to a lecture by Phil Plait. I think that he is from Boulder, CO and he came down the CSU-Pueblo campus and had a very entertaining couple of hours listening to him. Got to talk to him afterwards and he's a down to earth and funny guy. Laurence Krauss is on the World Science Festival panels from this year with Brian Green along with a couple other people that are on this show. Amy Mainzer works at JPL I believe. Those are just a few off the top of my head but I'm positive that they are on the up and up. You can find the World Science Festival lectures and panels on YouTube and as they are introduced they credit their professions and where they currently work. Hope this helps because they all are legit.
shareLaurence Krauss is easily one of the best talking heads on the show--he's not at all sensational in his comments, he's quick to remind us that a lot of stuff is simply a theoretical/mathematical construct, etc. The show would probably be better if he were simply the host, and if he were to write it.
On the other extreme, we've got Hakeem Oluseyi, who seems like half of his comments are that various astronomical/physical phenomena amount to "A zombie that's going to bite you in the ass!"