 Here's a 2016 photograph of the bubble nebula. It's a balloon-like bubble, seven light-years across, being blown into space by a superhot massive star, an extremely bright, massive, and short-lived star that has lost most of its outer hydrogen and is now fusing helium into heavier elements. The star is about 4 million years old, and in 10 to 20 million years it will likely detonate as a supernova. It is responsible for ionizing the entire region. In this clip, a virtual camera flies through the foreground stars and approaches the central bubble. The three-dimensional perspective emphasizes the extended nature of the structure and the fact that the star is not located at the center. The computer model incorporates both scientific and artistic interpretations of the data. In particular, distances are significantly compressed.