Visualization Credit: NASA, ESA, Hubble, J. Anderson, G. Bacon, L. Frattare, Z. Levay, and F. Summers (STScI);Acknowledgment: The Hubble Heritage Team (STScI/AURA), A. Nota (ESA/STScI), the Westerlund 2 Science Team, and ESODetails: http://hubblesite.org/video/26/scienceDetails: https://apod.nasa.gov/apod/ap170704.html