a cluster of stars in the night sky

CLASH Galaxy Cluster MACS J2129-0741 Caption: This is a wider view of galaxy cluster MACS J2129-0741, located in the constellation Aquarius. The massive galaxy cluster magnifies, brightens, and distorts the images of remote background galaxies, including the far-distant, dead disk galaxy MACS2129-1. Credits: NASA, ESA, M. Postman (STScI), and the CLASH team