Illustrations
Size of the Universe over time
April 2, 2001 · ESA/Hubble · Expansion, Universe
This graph plots the size of the universe as measured by Hubble telescope observations of exploding stars, called supernovas, at various distances from Earth.
More Hubble images of Expansion, Universe
Model of expanding UniverseApril 2, 2001
Astronomers use Hubble to measure the expansion rate of the UniverseMay 9, 1996
Magnetic star (artist's impression)July 12, 2001
Observing possible free-floating planet in globular cluster Messier 22 (artist's impression)June 27, 2001 · video
Anatomy of a protoplanetary diskApril 26, 2001
Illustration of the Dynamics of a ProplydApril 26, 2001Illustration of Supernova in an Elliptical GalaxyApril 2, 2001 · video
Illustration of Expanding Universe (Concentric Rings)April 2, 2001 · video