Mar 23, 2008 This artist's conception illustrates the decline in our universe's "birth-rate" over time. When the universe was young, massive galaxies were.
Dec 21, 2004 Baby Galaxies in the Adult Universe. Surveying thousands of nearby galaxies with its highly sensitive ultraviolet eyes, NASA's Galaxy Evolution.
A video instructional series on physics for college and high school classrooms and adult learners; 52 half-hour video programs and coordinated books.