Maunakea – In 2004, scientists with NASA’s space-based Galaxy Evolution Explorer (GALEX) spotted an object unlike any they’d seen before in our Milky Way galaxy: a large, faint blob of gas with a star ...

The Blue Nebula has puzzled scientists for more than a decade, but new findings suggest it may be the youngest known example of two stars merging into one. Astronomers first discovered the mysterious ...

The Blue Ring Nebula is invisible to the human eye, but telescopes can measure the ultraviolet light, which is shown here in blue. NASA/JPL-Caltech/M. Seibert (Carnegie Institution for Science)/K.

"Every time we thought we had this thing figured out, something would tell us 'No, that's not right.'" For the past 16 years, a cosmic conundrum has puzzled astronomers. What caused the unusual Blue ...