In the darkness of space, invisible energy fills the vast regions between the stars. This video sheds light on intergalactic radio waves, microwaves, X-rays, deadly gamma rays, and other forms of energy not visible to the naked eye. Information on technology for seeing the invisible universe such as the Very Large Array radio telescope, the Infrared Astronomical Satellite, the Compton Gamma Ray Observatory, the Hubble Space Telescope, and the Chandra and Newton X-ray Observatories will give students a new view of the "emptiness" of space.

Encoded with permission for digital streaming by Infobase on June 23, 2006. Learn360 is distributed by Infobase for Films for the Humanities & Sciences, Cambridge Educational, Meridian Education, and Shopware.

Invisible Energy (4:55) -- In the Beginning (1:42) -- Low Energy Radiation (4:11) -- High Energy Radiation (4:15) -- Cosmic Rays (2:43) -- The Hubble Space Telescope (3:05).