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

Hubble’s high-resolution imagery allowed researchers to hone in on more of the Bullseye galaxy’s rings — and helped confirm ...

A small blue dwarf galaxy passed through the massive Bullseye galaxy. This impact created nine rings of new stars.

you’re seeing what a team of astronomers spied last year—a rare formation created by the grazing collision of two spiral galaxies. Galactic sideswipes aren’t unusual, says lead researcher ...

Galactic collisions ... "ripples," or star-filled rings similar to those formed when a rock breaks the surface of a pond, but also triggered new regions of star formation in LEDA 1313424.

NASA's upcoming Nancy Grace Roman Space Telescope will have the capacity to look for these fossils of galaxy formation ... size of galactic halos (they are often 15–20 times as big as the ...

NASA’s Hubble Space Telescope has revealed a galaxy resembling a bullseye, with multiple rings expanding from its centre. This rare sight offers insights into galactic collisions and star ...