One day in early March, Norcross High School junior Alexa Bill carefully studied the emergency oxygen levels of her astronauts from her seat in mission control.

She’d spent the past few days in Huntsville, Alabama, at the U.S. Space & Rocket Center, and learned that every detail matters. One team had forgotten to close one of the bay doors during their simulated mission and were notified after their mission they would have burned up on re-entry.