Wiktionary
star-forming
a. (context astronomy English) Describing a region of space in which new stars are being formed
Usage examples of "star-forming".
Not only had every star been accorded due prominence -- colours, sizes, luminosities, binary associations, positions and space velocities all represented with absolute fidelity -- but there were also star-forming regions, wispish, gently glowing veils of condensing gas, in which were embedded the hottening embers of embryo suns.
Researchers using the Anglo-Australian Telescope have found star-forming regions bathed in circularly polarized light, and we may owe our existence to the sun itself being formed in such a region.