How to Sign "Universe"
Form both hands into 'U' handshapes, with your index and middle fingers extended and kept together. Hold your non-dominant hand in front of your chest. Use your dominant 'U' hand to circle entirely around the non-dominant hand, finishing by resting the heel of your dominant hand on top of the non-dominant hand. The motion is identical to the sign for 'world', but initialized with the letter 'U'.