This Hubble image shows a jellyfish galaxy, a galaxy type named for its larger main body with tendrils that float along after it like the sea creature.
This week’s image from the Hubble Space Telescope shows a special and delightful cosmic object: a jellyfish galaxy. These galaxies are named for their larger main body with tendrils that float along after them, like the sea creatures.
Jellyfish galaxies are formed due to an effect called ram-pressure stripping, in which the gravity of other nearby objects like galaxies or galaxy clusters acts like a headwind, moving dust and gas from the galaxy and stripping it in some regions. This process can slow star formation in the galaxy as there is no longer enough dust or gas available to form new stars, and can even cause the eventual death of the galaxy in question.
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