The universe had a secret life before the Big Bang, new study hints
A study suggests the universe may have contracted before the Big Bang, proposing dark matter consists of primordial black holes. Gravitational waves from this phase could be detected by future observatories.
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A recent study suggests that the universe may have undergone a "bouncing" phase before the Big Bang, challenging the traditional view of a singular beginning. This theory posits that the universe contracted to a minuscule size before rebounding, leading to the expansion we observe today. The researchers propose that dark matter could consist of primordial black holes formed during this contraction phase, which might have been created from density fluctuations. If validated, this hypothesis could explain the nature of dark matter, which constitutes about 80% of the universe's mass but remains largely unidentified. The study indicates that gravitational waves produced during the formation of these black holes could be detected by future observatories, such as the Laser Interferometer Space Antenna (LISA) and the Einstein Telescope. These observations could provide evidence for the existence of primordial black holes as a component of dark matter. The findings, published in the Journal of Cosmology and Astroparticle Physics, align with current observations of cosmic microwave background radiation and the curvature of space, supporting the bouncing cosmology model.
- The universe may have experienced a contraction phase before the Big Bang.
- Dark matter could be composed of primordial black holes formed during this contraction.
- Gravitational waves from black hole formation may be detectable by future observatories.
- The study challenges traditional cosmological views and aligns with current cosmic observations.
- Future research could confirm the role of primordial black holes in dark matter.
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