BOOMERanG experiment

The BOOMERanG experiment (Balloon Observations Of Millimetric Extragalactic Radiation and Geophysics) measured the cosmic microwave background radiation during three sub-orbital (high altitude) balloon flights. The first was a test flight over North America in 1997. The two subsequent flights were over Antarctica in 1998 and 2003. It predicted that the Universe would continue to keep expanding. WMAP was developed at the same time, finding that the Cosmic Microwave Background Radiation was first created 380000 years after the Big Bang.