- "The target area is only two meters wide. It's a small thermal exhaust port, right below the main port. The shaft leads directly to the reactor system."
- ―Jan Dodonna on the attack on the first Death Star
A thermal exhaust port or simply called an exhaust port was a small opening on the Death Star that led to its reactor core, which was deliberately designed by Galen Erso as an act of sabotage to give the station a critical vulnerability. During the Battle of Yavin, Luke Skywalker fired two proton torpedoes into the exhaust port with the aid of the Force, leading to the destruction of the battle station.