In Euclid’s image of the dwarf irregular galaxy NGC6822, the locations of several HII regions and two globular clusters are shown. HII regions are stretched-out regions of ionised hydrogen atoms in which star formation has recently taken place. Globular clusters are compact collections of hundreds of thousands of stars held together by gravity. Euclid’s infrared observations of this irregular galaxy show how some of these HII regions and globular clusters are distributed across the galaxy.
Read more about Euclid’s view of irregular galaxy NGC 6822
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[Image description: This square astronomical image is speckled with numerous stars visible across the black expanse of space. Most stars are visible only as pinpoints. More stars are crowding the centre of the image, visible as an irregular round shape. This is an irregular galaxy. The centre of the galaxy appears whiter and the edges yellower. Several pink bubbles are visible spread throughout the galaxy, these are star forming regions. The stars across the entire image range in colour from blue to white to yellow/red, across a black background of space. Blue stars are younger and red stars are older. A few of the stars are a bit larger than the rest, with six diffraction spikes.]