eso_eso1525b June 25th, 2015
Credit: A. Longobardi (Max-Planck-Institut für extraterrestrische Physik)/C. Mihos (Case Western Reserve University)/ESO
The red and blue dots mark the position of the planetary nebulae whose motion revealed that Messier 87 has recently been struck by another, smaller galaxy, which has now fully merged with it. Those marked in red are moving away from us, and the blue ones toward us with respect to the galaxy as a whole.
Provider: European Southern Observatory
Image Source: https://www.eso.org/public/images/eso1525b/
Curator: European Southern Observatory, Garching bei München, Germany
Image Use Policy: Creative Commons Attribution 4.0 International License
Detailed color mapping information coming soon...
Providers | Sign In