Credit: Harvard-Smithsonian CfA
Observers: Brian McLeod
View/Download Full Resolution Image
View/Download Poster (PDF)
Light from the Whirlpool Galaxy takes 23 million years to reach Earth.
When the light we observe now left the Whirlpool Galaxy, mammals—including horses and whales—were evolving into diverse species.
Learn more about human exploration of the universe. Visit the Explore the Universe exhibit at the Smithsonian National Air and Space Museum or online.