BOOMERanG experiment
Appearance
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.