The image above, taken with the space telescope Hubble, from Nasa / ESA, shows a special class of star-forming nursery known as Floating Evaporating Gas Globules, or frEGGs, in the acronym in English. The astronomical object in the photo is formally known as J025157.5 + 600606.
When a new massive star begins to shine within the cold molecular cloud from which it was formed, its energetic radiation can ionize the cloud’s hydrogen and create a large, hot bubble of ionized gas. Surprisingly, located inside this hot gas bubble around a nearby massive star are frEGGs. These are dark compact globules of dust and gas, some of which are giving rise to low-mass stars.
The boundary between cold and dusty frEGG and the hot gas bubble is seen as the bright purple / blue edges in this fascinating image.
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In July 2020, an earlier ESA / Hubble image reproduced by PLANETA of object J025027.7 + 600849, presented another frEGG.