The Microwave Anisotropy Probe (MAP) satellite launched in July 2001 by the US space agency NASA, and the Planck satellite due to be launched in 2008 by the European Space Agency, are both intended to observe the afterglow of the Big Bang.
美國在今年六月發射的衛星 MAP，與歐洲預計在二○○八年發射的 PLANCK，也都是用來觀測宇宙大爆炸之後的餘光。