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Galaxies473 articles archived since 1845

Giant Bubbles Soar over the Milky Way

Giant Bubbles Soar over the Milky Way

Newly discovered lobes stretch tens of thousands of light-years above and below the Milky Way's disk. Where did they come from?

December 16, 2015 — Douglas Finkbeiner, Meng Su and Dmitry Malyshev

Little Galaxy Keeps Churning Out Stars

The recently discovered small galaxy Leo P contains only about a hundred-thousandth as many stars as the Milky Way, but it's bucking the small galaxy trend by continuing to make new ones  

November 15, 2015 — Ken Croswell and Steve Mirsky

Dark Matter Dominates Just-Discovered Galaxies

Astronomers have discovered more than 800 so-called "ultradiffuse galaxies" that are virtually invisible because they have relatively few stars and are mostly dark matter. Clara Moskowitz reports  

July 8, 2015 — Clara Moskowitz