Trekkies are hoping to take back a record in Las Vegas this weekend.
The largest Star Trek convention is being held at the Rio All-Suites Hotel and Casino, starting on Thursday.
The convention features a number of events, including parties and dinners with Star Trek celebrities.
There will also be a convention floor filled with vendors and panels, including several dedicated to the science and technology behind the world-wide phenomenon.
One of the biggest events will be an attempt to break the Guiness Book of World Record for most people dressed up in Star Trek costumes.
The group held the record until it was broken in London in October. It will take more than 1,063 Trekkies to take it back.
The record attempt is set for Saturday.