Kepler-16b
Kepler-16b -- depicted here in NASA's exoplanet travel bureau poster series -- is unique as it orbits two stars. NASA/JPL-Caltech

Whether it's reciting some great quotes, rewatching the original trilogy or studying the "Star Wars: The Force Awakens" trailer for the 10th time, chances are you're celebrating "Star Wars" Day. NASA is getting in on the fun on Twitter and is sharing themed images of exoplanets, the moon and more.

"May the fourth be with you," as the saying goes today. The space agency fittingly started the day with a tweet dedicated to the spiral galaxy Messier 66, the largest of the Leo Triplet, located around 35 million light-years from Earth in the constellation Leo -- a galaxy far, far away. Messier 66 was observed by the Hubble Space Telescope in 2010.

Next up was a tribute to Obi-Wan's quote from "Star Wars: Episode IV -- A New Hope." When you're NASA, you have photos of the moon and the space station ready for such occasions.

Last -- but not least -- is a visit to a planet outside our solar system that could easily be mistaken for Luke Skywalker's home planet. Kepler-16b is an exoplanet with a double sunset.

The exoplanet was previously profiled as part of the space agency's exoplanet travel bureau poster series. Kepler-16b is roughly the size of Saturn and its discovery helped scientists confirm a theory that there could be planets orbiting binary star systems.

Each space station crew gets a new sci-fi themed poster, and Expedition 45's features the six astronauts as Jedi. NASA astronaut Scott Kelly and Russian cosmonaut Mikhail Kornienko are aboard the space station for a year.

While not from this year's "Star Wars" Day celebration, NASA created this video of R2-D2 saving the day, and flight engineer Rick Mastracchio delivers a special message in 2014.

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