Our Cosmos Is Expanding Faster And Is Younger Than We Thought
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There’s been much discussion online about how many candles we should put on our cosmos’s birthday cake. Using NASA’s Hubble Space Telescope, John Hopkins University astronomer and 2011 Nobel laureate in physics, Adam Riess, after two years of observations and calculation, concluded that the expansion rate or Hubble Constant is about 74 (9% faster than previously estimated) and the universe (aka cosmos) is somewhere between 12.5 to 13 billion years old rather than the established estimate of 13.8 billion years old.
CBS News contributor and physicist Michio Kaku joins CBSN’s Elaine Quijano to discuss a new study that says the universe is younger and expanding faster than previously thought, in the video “Universe is younger and expanding faster than previously thought“, below:
Back in 2017, Dr. Wendy L. Freedman, Astronomer in the video “Hubble Space Telescope: Astronomers Conclude Universe is Younger Than Previously Thought“, below:
For this science news video, we’ll be talking about another exciting discovery in science about the rate of expansion of the universe that has scientists saying it’s the most exciting development in cosmology in decades, in the video “Science News-Universe Expansion Is Faster Than We Thought“, below:
The Old Measurement
- In 2013, the European Planck satellite team studied background radiation from a time 370,000 years after the Big Bang.
- Cold and hot spots in the radiation helped determine how far away into the universe they were looking.
- The team inputted their calculations into Einstein’s theory of general relativity and determine the universe was 13.8 billion years old.
Perhaps a fudge factor (due to the dark energy) needs to be factored into the calculations. Science text books need to be revised in light of this information.
More on Adam Riess & Dr. Wendy Freedman, please refer to the excerpts from wikipedia, in italics, below:
Adam Guy Riess (born December 16, 1969) is an American astrophysicist and Bloomberg Distinguished Professor at Johns Hopkins Universityand the Space Telescope Science Institute and is known for his research in using supernovae as cosmological probes. Riess shared both the 2006 Shaw Prize in Astronomy and the 2011 Nobel Prize in Physics with Saul Perlmutter and Brian P. Schmidt for providing evidence that the expansion of the universe is accelerating.
Wendy Laurel Freedman (born July 17, 1957) is a Canadian-American astronomer, best known for her measurement of the Hubble constant, and as director of the Carnegie Observatories in Pasadena, California, and Las Campanas, Chile. She is now the John & Marion Sullivan University Professor of Astronomy and Astrophysics at The University of Chicago. Her principal research interests are in observational cosmology, focusing on measuring both the current and past expansion rates of the universe, and on characterizing the nature of dark energy.
This image above is made from a composite of September 2003 – January 2004 photos captured by the NASA/ESA Hubble Space Telescope shows nearly 10,000 galaxies in the deepest visible-light image of the cosmos, cutting across billions of light-years. In research released on Friday, April 26, 2019, Nobel winning astronomer Adam Riess calculates the cosmos is between 12.5 and 13.0 billion years old – about 1 billion years younger than previous estimates. (NASA, ESA, S. Beckwith (STScI), HUDF Team via AP).
Once again, perhaps a fudge factor (due to the dark energy) needs to be factored into the calculations. Keep in mind that Hubble Constant is not a constant. Science text books need to be revised in light of this information.
Gathered, written, and posted by Windermere Sun-Susan Sun Nunamaker
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