The researchers used data from the Dark Energy Survey and the Antarctic Telescope to recalculate the total amount and distribution of matter in the universe. They found that there is about six times as much dark matter in the universe as there is normal matter, a finding that aligns with previous measurements.
But the team also found that the matter was less clumped together than previously thought, a discovery detailed in a he sat from three All of the research papers have been published this week in Physical Review D.
the Dark Energy Survey observes photons of light in visible wavelengths; the South Pole Telescope Light is seen in microwave wavelengths. This means that the South Pole Telescope is monitoring the cosmic microwave background – the oldest radiation we can see, dating back to about 300,000 years after the Big Bang.
The team presented the datasets from the surveys involved in two maps of the sky; They then superimposed the two maps to understand the full picture of how matter is distributed in the universe.
said Eric Baxter, an astronomer at the University of Hawaii and one of the co-authors of the research paper Release. “The high accuracy and robustness of the sources of bias of the new results make a particularly compelling case that we may begin to uncover holes in our standard cosmological model.”
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dark matter Something In the universe we can’t directly observe it. We know they exist because of their gravitational effects, but we cannot see them otherwise. Dark matter makes up about 27% of the universe, According to CERN. (Ordinary matter makes up about 5% of the total content of the universe.) The remaining 68% It consists of dark energy, an as yet unconfirmed category evenly distributed throughout the universe and responsible for the accelerating expansion of the universe.
The Dark Energy Survey still has three years of data to analyze, and the South Pole Telescope is currently taking a fresh look at the cosmic microwave background. Meanwhile, the Atacama Cosmological Telescope (high in Chile’s namesake desert) is conducting a highly sensitive background survey. With the new microdata of the investigation, Researchers may be able to put a file cosmological standard Hard test example.
In 2021, Atacama The telescope helped scientists come up with a Newly accurate measurement For the age of the universe: 13.77 billion years. Further inquiry into the cosmic microwave background could also help researchers deal with the Hubble tension, a disagreement between two of the best ways to measure the expansion of the universe. (Depending on how you measure it, the researchers came up with two different numbers for the rate of this expansion.)
As observational methods become more accurate, and more data is collected and analysed, this information can be fed back into larger cosmological models to determine where we have been wrong in the past and lead us to new lines of inquiry.
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