Some dwarf galaxies in the early universe travelled so fast that their gas was stripped from them, according to a new computer simulation. This cosmic vanishing act could help explain a long-standing ...

A study published in July by a Harvard-Smithsonian Center postdoctoral student has uncovered important clues about the disputed explanation for dwarf galaxies beyond the gravitational effects of the ...

Brown dwarfs started out the same as ordinary stars, collapsing from giant nebulas of dust and gas. Most brown dwarfs are not quite massive enough to sustain a nuclear fusion reaction at their cores.