NASA's Hubble Telescope Reaches Milestone, Looks for Elusive Supernova
An image from NASA's Hubble Space Telescope of galaxy cluster MACS J0417 is part of repeated observations to monitor for the reappearance of supernova Athena, which can help astronomers measure the expansion rate of the universe.
The text is NASA’s caption.
From NASA’s Image of the Day. NASA’s own photos are generally not protected by copyright; each one keeps NASA’s credit line, and pictures credited to anyone else are left out. NASA does not endorse this site. nasa.gov ↗
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