Free-floating Evaporating Gaseous Globules (frEGGs) were first seen in Hubble’s famous image of the Eagle Nebula. Because these knots of cold interstellar gas are dark, we only notice them near where new stars are forming and emitting intense UV light which erodes away. most of the neighboring gas.

This Hubble image also features a pair of young, giant stares. The one on the left is a giant O-type blue-white; the one right is a supergiant B-type. Both types burn their fuel quickly, and supergiants end up as supernovae.

Image Credit: NASA / ESA

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