Around 50 million years ago, a blue dwarf galaxy shot through the center of an enormous galaxy more than twice the size of the Milky Way, called LEDA 1313424. Now, astronomers have revealed the ...

Astronomers trace the striking pattern to an encounter between a big galaxy and a much smaller one some 50 million years ago.

Hubble's image allowed Pasha to inspect eight of the bullseye's rings—more starry hoops than have been detected by any telescope in any galaxy, according to NASA. But faint patches of emission ...