In some well-known cases, such as the Cartwheel Galaxy, a head-on collision also produced multiple concentric features—but nowhere near the amount seen in Bullseye. Astronomers say catching all ...

Scientists, using infrared images from NASA's Spitzer Space Telescope, have found that the Milky Way’s graceful spiral structure is primarily shaped by two arms extending from a central bar of stars.

NASA's Hubble Space Telescope has captured a breathtaking image of the spiral galaxy NGC 3430, situated 100 million light-years from Earth in the Leo Minor constellation.