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How do you make a chicken taco in space?

How hard is it to prepare food in space? It’s one of the challenges astronaut Scott Kelly faces during his year aboard the International Space Station, the longest space mission in American history.

The two-part PBS series, “A Year in Space” documents Kelly as he tests the mental and physical limits for space travel, laying the groundwork for a manned mission to Mars. Kelly and his identical twin brother Mark are a near-perfect, two-person sample group, allowing biomedical researchers to better understand what emotional, physical and biological changes Scott faced in space, by comparing him to his brother, who spent the same year on Earth. Scientists will use their findings to help develop methods of overcoming challenges of interplanetary travel.

“A Year in Space” is adapted from TIME’s original digital series and premieres at 8 p.m. EST Wednesday, March 2 on PBS. Check your local listings.

Editor’s note: The original post has been updated to reflect that the series premieres at 8 p.m. EST March 2, not 9 p.m.

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