Cosmic Microwave Background Radiation

The Particle Zoo


Available in ESA or WMAP pattern. Also available as a pillow.

Discovered inadvertently by two Bell Laboratories astronomers in 1964, the CMBR is the residual radiation from the Big Bang that fills the universe in all directions. The variations in the pattern correspond to density variations which formed galaxies and were first detected by NASA's COBE (Cosmic Background Explorer). Only visible in the microwave region of the radio spectrum, the CMBR is 2.7 degrees Kelvin and comprises a portion of the static you see when you turn on an untuned television.

Approximately 2 oz (57 gm); 9 inches (23 cm) diameter.
For ages 5 and up as it contains glued-on/small parts.