Bruce Gordon Elmegreen (born 24 February 1950) is an American astronomer.
[3] His research deals with interstellar gas with a focus on star formation in gaseous nebulae and large-scale structure of spiral galaxies.
Using computer model simulations, he proved the existence of standing waves in spiral galaxies.
Since 1976 he has been married to the astronomer Debra Meloy Elmegreen (born 1952), who is a professor at Vassar College.
In 2013, they authored a paper together, "The Onset of Spiral Structure in the Universe", published in the Astrophysical Journal.