On the latest episode of "MasterChef Junior," appropriately titled "One Small Step," the judges have a special surprise for the mini-chefs.

In Zap2it's exclusive sneak peek, rolling smoke and an ominous countdown welcome the kids to the Mystery Box Challenge. They have no idea what to expect is coming out of the giant mystery box. Aren't they surprised when it's the judges dressed as astronauts?

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"One small step for man, one giant leap for 'MasterChef,'" says judge Gordon Ramsay as he removes his space suit helmet, revealing quite the case of helmet hair.

Which tiny home cook will emerge victorious from the out-of-this-world Mystery Box Challenge that features special guest Tracy Dyson, a real NASA astronaut? Tune in Friday, Nov. 20 at 8 p.m. ET/PT on FOX to find out.

Posted by:Andrea Reiher

TV critic by way of law school, Andrea Reiher enjoys everything from highbrow drama to clever comedy to the best reality TV has to offer. Her TV heroes include CJ Cregg, Spencer Hastings, Diane Lockhart, Juliet O'Hara and Buffy Summers. TV words to live by: "I'm a slayer, ask me how."