1. The Experiment Begins

The 12 celebrities land on "Mars."

2. Water Crisis

Just as they were settling into life on the red planet, the remaining celebrities must figure out how to replenish their water supply.

3. Fire in the Hole

The 10 remaining contestants brave the elements of the Martian desert when a fire breaks out.

4. Life on Mars?

The contestants are sent on a mission which tests their perseverance; two are eliminated.

5. Resupply Mission

Four new crew members land on Mars, but their supply craft goes off course and crashes.

6. Leaks in the Hab

The celebs must work together to plug holes in the walls of the hab caused by meteors.

7. Evil AI

A virus takes over the artificial intelligence system and two celebronauts are stuck outside.

8. Solar Flare

The nine remaining celebronauts need to repair solar panels damaged by a series of solar flares.

9. We Are Not Alone

The remaining celebronauts discover they are not alone on Mars.

10. Downward Dog

The seven remaining celebronauts must find the hab's missing house pet, Raddog.

11. Distress Signal

The hab detects a weak distress signal that the crew must investigate immediately.

12. Brightest Star

The crewmates must assemble a satellite tower and broadcast a personalized message to Earth.