The universe is not a homogenous spread of billions of galaxies. Rather, it consists of random clusters of galaxies, concealing dark matter within. It appears like vast voids separating the gigantic filaments. Around three decades back, astronomers from Harvard-Smithsonian Center for Astrophysics (CfA) discovered and architecturally mapped the large-scale structure (LSS) of the universe around three decades back.
Astronomers have united LSS maps, concepts regarding the inflationary big bang, and findings from CMBR (the cosmic microwave background radiation) to generate a notably consistent image of the universe, revealing its origin and evolution. However, the information regarding the dark matter was not up to the mark. Dark matter has been expected to gather in LSS. CfA astronomers made use of tracer galaxies’ photons to explore the LSS in depth.
As these photons reach at the observation, particularly on Earth, their directions are altered by the gravitational forces of the LSS, along with the effects of gravitational lensing. The appropriate location of young galaxies based on the projections and their statistical arrangements are sensitive to the existing and the emerging structure as well as the geometry of matter in the universe.
On a similar note, a different team of astronomers has discovered that the universe is expanding at a faster pace than expected.
Researchers have discovered a new theoretical calculation to measure the rate of expansion of the universe. The new theory contradicts the existing model of the universe, on which researchers have relied on for so long.
The recently derived theory is based on the information gathered by the Hubble Space Telescope. The theory reveals that the universe is expanding at the pace of just below 43 miles per seconds per megaparsec (1 megaparsec=3.26 million light-years)
Earlier, the expansion rate was calculated by taking the measurements using ESA’s Planck satellite, which revealed that the universe is expanding at the rate of 41.6 miles per second per megaparsec.