NASA's Hubble Space Telescope has captured a cosmic bullseye! The gargantuan galaxy LEDA 1313424 is rippling with nine star-filled rings after an 'arrow' -- a far smaller blue dwarf galaxy -- shot ...

A huge explosion of cosmic gas has been spotted at the heart of a far-off galaxy. This enormous outburst, known as a "gas outflow," is around 20,000 light-years across, about one-fifth of the ...