Create an otherworldly painting capturing the vibrant colors and intricate designs of a cultural festival taking place on a distant planet during a space exploration mission.

Generate a painting that captures an exotic cultural festival happening on a far-off planet, perceived during a space exploration mission. The scene should encapsulate the vibrance of various colors and intricate designs that truly define the foreign culture. Imagine what alien festivals might look like, incorporating unfamiliar architectural structures, unusual musical instruments, strange culinary delights and bizarre, yet captivating, customs. The sky should be a mesmerizing composition of nebulae and distant stars, all contributing to the otherworldly ambiance.