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Three dozen dwarf galaxies far from each other had a simultaneous “baby boom” of new stars, an unexpected discovery that challenges current theories on

As always, I'm happy to bring you the best of the comments from this past week, and know that starting  next week, I'll be going back two weeks rather than the standard one in order to make sure that any follow-up comments that need attention get exactly what they deserve. That said, let's jump on in to your Comments of the Week! From James Carlson on the Big Rip scenario: "It could be that entropy doesn’t play to a full house in that the big rip might serve to recreate the universe in a sudden expansion of spacetime and the creation of sub atomic oaricles."

Center for Astrophysics A Hubble image of the colliding galaxies NGC3690. Over its lifetime, a galaxy’s star formation history is affected by many physical processes including mergers. A new study uses many simulations of galaxy evolution to develop a statistical method to categorize the star-formation history from snapshot observations. NASA/ESA/Hubble Galaxies in the observable universe show a remarkable diversity in their structure and properties, mostly because of the many different pathways for their stars to form and evolve. The growth of galaxies typically occurs through the accret...