New Tarantula Nebula observations from the Atacama Large Millimeter/submillimeter Array (ALMA) are combined with imagery from ...

A glittering fireworks display, this is a giant cluster of about 3,000 stars called Westerlund 2 that resides in a raucous stellar breeding ground known as Gum 29, located 20,000 light-years away from ...

On May 20, 1990, the Hubble Space Telescope sent its first image to Earth. This photo turned out to be 50% sharper than ...