Researchers had started working with BICEP2, a special microwave telescope based at the South Pole, in March. After about six months, they claimed that have noticed early universe gravitational waves, created just after the Big Bang. Now, some other researchers have raised doubts about the earlier research and have started discussing the implications of the waves' detection.
Since the announcement, cosmologists have started questioning about the claims of BICEP2 team. The growing evidence indicates that BICEP2 might have involved signals measured from dust in Earth's Milky Way galaxy.