NASA scientists and engineers held their annual pumpkin carving contest ahead of Halloween.

It featured Martians, a swinging carousel, a Pac Man themed Jack-o-lantern and many, many more. Take a look at some of the creations

The contest was held NASA's Jet Propulsion Laboratory in California. This was their 6th year holding the contest and robotics were on full display.

NASA mechanical engineer Aaron Yazzie tweeted some of the creations. He sparked new interest in a little-known pumpkin-carving mastering.

Photos | NASA pumpkin carving contest