This week's image from the Hubble Space Telescope shows a dramatic collision of three different galaxies.
This week’s image from the Hubble Space Telescope shows a dramatic collision of three different galaxies. The trio, located in the Boötes constellation, are in the process of merging and will eventually form one single large galaxy.
Galactic collisions, when two or more galaxies meet each other, are not uncommon in the universe. The results of these enormous collisions can be varied, with either the galaxies merging to form a new larger galaxy, as is the case here, or one galaxy annihilating another. Typically if a larger galaxy collides with a smaller satellite galaxy, the larger galaxy will strip away stars and material from the smaller galaxy and maintain most of its shape. In other cases, the enormous gravitational forces involved in a collision can pull one or both galaxies into strange shapes.
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