Hubble Space Telescope

Hubble Space Telescope

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The galaxy-studded vista of the Hubble Ultra Deep Field. Credit: NASA, ESA, H. Teplitz, M. Rafelski (IPAC/Caltech), A. Koekemoer (STScI), R. Windhorst (Arizona State University), and Z. Levay (STScI)

Astronomers compared old Hubble data with new and found new supernovae and black holes in the early Universe

Comparing old Hubble data to today is revealing distant active galaxies.
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