NASA / ESA’s Hubble Space Telescope observed a festive, free-floating red nebula situated around 7,000 light-years from Earth. Classified as [KAG2008] globule 13 and J025838.6+604259, this small region of the nebula Westerhout 5 is suffused with bright red light as well as hosts a free-floating Evaporating Gaseous Globule (frEGG).
The frEGG in this Red Nebula is the small tadpole-shaped dark region that you see in the upper center-left. Both Evaporating Gaseous Globules (EGGs) and frEGGs are essentially denser regions of gas that photo-evaporate less easily than the less dense gas surrounding them. This phenomenon occurs occurs when gas is ionized and dispersed away by an intense source of radiation, which are normally young, hot stars releasing massive amounts of ultraviolet (UV) light.
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The frEGG in this image is a dark spot in the sea of red light. The red color is caused by a particular type of light emission known as H-alpha emission. This occurs when a very energetic electron within a hydrogen atom loses a set amount of its energy, causing the electron to become less energetic and this distinctive red light to be released,” said the European Space Agency.
