A new series of telescope images taken with conventional cameras, high-resolution ground telescopes, and the Hubble Space Telescope show glittering details of this colorful star cluster in the Southern Cross constellation.

To learn about other recent astronomical discoveries, visit the Science Bulletins website.

Arp 194 is one of 338 galactic curiosities grouped in a catalog called the Atlas of Peculiar Galaxies, which was organized in 1966 by astronomer Halton Arp. The Hubble Space Telescope recently imaged the galaxy group to reveal details on its dynamic interaction. The image celebrates Hubble’s 19th year of observing the cosmos. Hubble’s Wide Field Planetary Camera 2, which took this shot, was upgraded to a new, improved version on May 14.

To learn about other recent astronomical discoveries, visit the Science Bulletins website.

Astronomers have spotted a rare, complex cosmic collision of four galaxy clusters. A spectacular composite image from NASA's Chandra X-Ray Observatory and Hubble Space Telescope revealed the pileup—and its likely source.

To learn about other recent astronomical discoveries, visit the Science Bulletins website.