For nearly half a century, the Big Bang theory has been accepted by many as the best explanation for how the universe began.
But what if it was wrong – and the universe’s current expansion was actually preceded by an earlier phase, and there are still traces of that ‘previous’ universe?
Brazilian physicist Juliano Cesar Silva Neves of the University of Campinas says, ‘I believe the Big Bang never happened.’
The Big Bang Theory has its origins in the late 1920s when US astronomer Edwin Hubble discovered that almost all galaxies are moving away from each other at ever-faster velocities.
But Neves believes in ‘bouncing cosmology’ – where the universe contracts in a Big Crunch, giving way to an eternal succession of universes.
During the ‘Crunch’ the universe contracts to extreme conditions of density and temperature – then expands again.
Neves believes there might be traces of previous universes still visible today.
Neves says that scientists need to ‘look for traces of the events in a contraction phase that may have remained in the ongoing expansion phase.
‘What traces? The candidates include remnants of black holes from a previous phase of universal contraction that may have survived the bounce.’
ches suggested deliberate action was behind it.