A large mass of gas fell into the lenticular galaxy NGC 3593 about 2 billion years ago, and this gas both changed the appearance of the galaxy and also created new stars that now orbit the galaxy in the opposite direction from the older stars.
A large mass of gas fell into the lenticular galaxy NGC 3593 about 2 billion years ago, and this gas both changed the appearance of the galaxy and also created new stars that now orbit the galaxy in the opposite direction from the older stars.
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