The Hubble Space Telescope has provided the world with incredible information that has helped formulate our knowledge of the universe. This telescope will soon be retired and replaced by a newer, more powerful telescope. Read about the...

Nicolaus Copernicus (February 19, 1473 - May 24, 1543) was the first astronomer to formulate a scientifically based heliocentric cosmology that displaced the Earth from the center of the universe. His epochal book, De revolutionibus...

Overview of Medeleyev's life and how his peers were at first skeptical when he formulated his periodic table. Includes a picture.