Space Science Update: Hubble's Yardstick of the Universe (Webcast)

Galaxy 4603 with Cepheids Identified, One Cepheid with EFX to Show Brightening

Animation of Cepheid Stars in Galaxies Showing Distances

Ground-Based Supernova Explosion Data

M100 Cepheids

Cepheid Variables: Brightness Over Time

Distance Scale