ULLYSES

The ULLYSES program studied two types of young stars: super-hot, massive, blue stars and cooler, redder, less massive stars than our Sun.

The top panel is a Hubble Space Telescope image of a star-forming region containing massive, young, blue stars in 30 Doradus, the Tarantula Nebula . Located within the Large Magellanic Cloud, this is one of the regions observed by ULLYSES.

The bottom panel shows an artist's concept of a cooler, redder, young star that's less massive than our Sun. This type of star is still gathering material from its surrounding, planet-forming disk.