“Eliminating the singularity or Big Bang– which 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– brings back the bouncing Universe on to the theoretical stage of cosmology. The absence of a singularity at the start of spacetime opens up the possibility that vestiges of a previous contraction phase may have withstood the phase change (between contraction to expansion) and may still be with us in the ongoing expansion of the Universe,” said Brazilian physicist Juliano Cesar Silva Neves.
“All of our observations find a complete symmetry between matter and antimatter, which is why the universe should not actually exist,” explained Christian Smorra, member of the BASE collaboration at the CERN research center. “An asymmetry must exist here somewhere but we simply do not understand where the difference is. What is the source of the symmetry break?”
Scientists are on the hunt for primordial magnetic fields dating back to the Big Bang, which would transform our understanding of how the universe evolved and solve a major mystery of our Universe. The unsolved question is: where did these enormous magnetic fields — an invisible primordial ‘magnetic soul’ that pervades the Cosmos — come from, if they existed at all?
While the billion-dollar Laser Interferometer Gravitational-Wave Observatory (LIGO) detector watches 24/7 for gravitational waves to pass through the Earth, new research shows those waves leave behind “memories” –a permanent displacement of spacetime that comes from strong-field, general relativistic effects–that could help detect them even after they’ve passed, creating the potential to tell us about everything from the time following the Big Bang and the creation of cosmic strings–to more recent events in galaxy centers.
“We do not know what dark matter is, but if it has anything to do with any scalar particles, it may be older than the Big Bang,” says astrophysicist Tommi Tenkanen at the Johns Hopkins University, who was not part of a 2019 University of Tokyo study that proposed the axion as a candidate for dark matter. The only fundamental scalar quantum field that has been observed in nature is the Higgs field-a field of energy that is thought to exist in every region of the universe.