Elliptical galaxies NGC 4038 and NGC 4039 colliding. (NASA/ESA/Hubble Heritage Team/AURA/B. Whitmore et al.)It’s both humbling and inspiring to consider how much remains to be discovered about the Universe. My collaborators and I recently addressed one of astrophysics’ longstanding mysteries: how massive elliptical galaxies form.For the first time, we now have strong observational evidence to...
The ultra-faint Milky Way companion galaxy Leo I appears as a faint patch to the right of the bright star, Regulus. Credit: Scott Anttila Anttler2 astrophysicists at the Harvard-Smithsonian Center for Astrophysics have proposed a method to see what could be the second-closest supermassive black hole to Planet: a behemoth three million times the...
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