In a press release this week from Cornell University, the university announced astronomers largely agree for an approximate age of the universe: 14 billion years.
The research was published in the Journal of Cosmology and Astroparticle Physics in Dec. 30th, 2013.
The latest calculation, using data obtained at the National Science Foundation's Atacama Cosmology Telescope (ACT), matches the one given by the regular model of the universe, as well as observations of the same light made by the European Space Agency's Planck satellite, which analyzed traces of the Big Bang from 2009 to '13.
The ACT team is a multinational partnership in which Cornell University plays an important part. Cornell helped create the Optical ACT, survey policy, software infrastructure, and data collection methods. Niemack created the Specialized ACTPol collection and works on the ACT commission. ACT has obtained grants from the National Science Foundation and donations from member organizations. These recent findings indicate a new paradigm for the universe may be required.
“Now we’ve come up with an answer where Planck and ACT agree,” said Simone Aiola, a researcher at the Flatiron Institute’s Center for Computational Astrophysics and first author of one of two papers. “It speaks to the fact that these difficult measurements are reliable.”
Their reports affirm the big-bang hypothesis, which implies that the universe is 13.77 billion years old–plus or minus 40 million years. A representative from Cornell University co-authored one of two articles coming out on the Antarctic study surrounding electromagnetic radiation.
In 2019, a study team analyzing the orbits of galaxies estimated that the cosmos was hundreds of millions of years younger than the Planck team expected. The disparity indicated a different paradigm for the cosmos could be required and thought it could be wrong. Scientists became worried and are now attempting to decide whether that is the case.
Differences in the cosmic microwave background (CMB)'s glow originated from quantum fluctuations that got intensified by the expanding universe into regions of differing density. We have a clear idea of how the Universe was born and recognize that the changes in the CMB can be spread out every billion light-years for temperature and half that for polarization. Our Milky Way galaxy is around 200,000 light-years wide.
The Apparatus for Cosmic Microwave Background Measurements (ACMBM) calculated the CMB with unparalleled resolution. The Planck satellite measured the same light, but by calculating its polarization in higher precision, the latest image from ACT shows more of the oldest trends ever seen.
ACT will be making measurements of the CMB and will finally provide a good view of the origin of the universe. The ACT team will search for indicators of physics that may not match the traditional cosmological model. Astrophysicists may settle the dispute about predictions of age and expansion rate of the universe, based on measurements of CMB and motions of galaxies.