Yale astronomers have announced the discovery of a galaxy with nine concentric rings—the most rings ever seen in a single ...

Instead, Siegel suggests that ring galaxies occur when one galaxy collides with the center of another galaxy, thus causing ripples throughout it. Another look at the Cartwheel Galaxy shows the ...

Astronomers have discovered a unique collisional ring galaxy, nicknamed the "Bullseye," that features nine rings, the most ...

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