Messier Monday: The King of the Leo Triplet, M66

The brightest galaxy in a spectacular close grouping of three provides a beacon of insight into our far future.

Image credit: Tenho Tuomi of Tuomi Observatory, via http://www.lex.sk.ca/astro/.
Image credit: me, using the free software Stellarium, via http://stellarium.org/.
Image credit: me, using the free software Stellarium, via http://stellarium.org/.
Image credit: me, using the free software Stellarium, via http://stellarium.org/.
Image credit: Suburban-Skies of http://suburban-skies.blogspot.com/2008/12/leo-trio.html.
Image credit: © 2014 From the Orlop, via http://orlop.net/astro/galaxy-messier-66/.
Image credit: ESO/P. Barthel, via http://www.eso.org/public/images/eso0338c/.
Image credit: NASA/JPL-Caltech/R. Kennicutt (University of Arizona) and the SINGS Team.
Image credits: X-Ray: NASA/CXC/Ohio State Univ./C.Grier et al.; Optical: NASA/STScI, ESO/WFI; Infrared: NASA/JPL-Caltech.
Image credit: ESO/INAF-VST/OmegaCAM. Acknowledgement: OmegaCen/Astro-WISE/Kapteyn Institute.
Image credit: Jose Mtanou of http://mtanous.mine.nu/images/leo_triplet2.jpg.
Image credit: NASA, ESA and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration. Acknowledgement: Davide De Martin and Robert Gendler.
Image credit: NASA, ESA and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration. Acknowledgement: Davide De Martin and Robert Gendler.

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Ethan Siegel

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.