Why do galaxies rotate?

By Edwin Alexani, Ph.D. Student in Astrophysical Sciences and Technology, Rochester Institute of Technology
Michael Zemcov, Professor of Physics, Director of Astrophysical Sciences and Technology, Rochester Institute of Technology

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to CuriousKidsUS@theconversation.com.

Why do galaxies spin or rotate? – Swara Dhat, age 13, Thane, India

Spinning is fun, and you can find many ways to do it. From carousels to an office chair, spinning is everywhere – even in outer space.

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