Rip Hunter Explains Time-Travel Limitation In DC's Legends Of Tomorrow Clip

The CW has release another new clip from tonight's "Pilot, Part 2" episode of DC's Legends of Tomorrow.

In last week's episode, Hawkman (Falk Hentschel) and Hawkgirl (Ciara Renée) found out they had a son, Dr. Aldus Boardman (Peter Francis James), and then not long after he died. So they want to know why they can't go back and save him. "I'm sorry, we can't go back and change events in which we participated," Rip Hunter (Arthur Darvill) tells the superhero couple. "Time would fold in on itself, creating a temporal vortex."

Check out the clip in the videos below.

Stein Vs. Stein — Tipped off to Vandal Savage's whereabouts, the team infiltrates a munitions deal with Professor Stein as their leader. Surrounded by some of the toughest criminals in the world, things quickly go from bad to worse when Savage realizes they don't belong there. A massive fight ensues and a piece of the Atom's suit falls off and into the wrong hands, which could potentially cause disastrous consequences in the future. Stein realizes the best way to retrieve the missing piece is to contact a brilliant man – his younger self. He, Sara and Jax head off in search of young Martin Stein, much to Rip's consternation. Meanwhile, Snart and Rory plan to steal a key element in defeating Savage but still unsure of his new teammates, Ray demands to come along on the mission. Carter helps Kendra remember something vital.

Check out preview images in our gallery at the bottom of the page.

"Pilot, Part 2" episode of DC's Legends of Tomorrow airs tonight at 8PM on The CW.