Chicago’s Adler Planetarium is scheduled to find out Tuesday if it will be the future home of a NASA space shuttle.

NASA has four space shuttles it’s looking to put on display. Adler Planetarium is one of 21 museums or science centers bidding to be the new home of a space shuttle.

The Smithsonian Institution has already laid claim to the oldest of the shuttles, Discovery. That leaves the fates of Atlantis, Endeavor and Enterprise up in the air. NASA estimates the cost to display one of the shuttles is around $28.8 million.

Adler Planetarium is facing off against other institutions such as the Museum of Flight in Seattle and the National Museum of the U.S. Air Force in Dayton, Ohio. NASA is scheduled to announce the winning homes of the shuttles on Tuesday at noon from the Kennedy Space Center in Florida.