Due to the weather, the Museum will be closed on Tuesday, January 27. All programs have been cancelled. Please check here for a full list, and check back for updates.
Regular updates will also be posted to our Facebook page and Twitter account (@AMNH).
If the Hayden Sphere is the size of the globular star cluster Messier 80, then this model is the relative size of the Oort Cloud of comets.
The Oort Cloud is a spherical swarm of trillions of comets orbiting the Sun. It extends about a fifth of the way to the nearest stars.