{"id":80188,"date":"2023-10-20T19:06:23","date_gmt":"2023-10-20T19:06:23","guid":{"rendered":"https:\/\/posterboyedit.com\/?p=80188"},"modified":"2023-10-20T19:06:23","modified_gmt":"2023-10-20T19:06:23","slug":"most-comprehensive-view-of-the-universes-history-drawn-up-in-two-charts","status":"publish","type":"post","link":"https:\/\/posterboyedit.com\/lifestyle\/most-comprehensive-view-of-the-universes-history-drawn-up-in-two-charts\/","title":{"rendered":"\u2018Most comprehensive view\u2019 of the universes history drawn up \u2014 in two charts"},"content":{"rendered":"

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Physicists have created what they are calling \u201cthe most comprehensive view\u201d of the history of the universe.<\/p>\n

Drawn up by researchers from the Australian National University, this representation could help shine a light on how our universe started.<\/p>\n

Study lead Professor Charley Lineweaver said that he set out with the desire to understand where all the objects in the universe came from.<\/p>\n

Lineweaver added: \u201cWhen the universe began 13.8 billion years ago in a hot Big Bang, there were no objects like protons, atoms, people, planets, stars or galaxies. Now the universe is full of such objects.<\/p>\n

\u201cThe relatively simple answer to where they came from is that, as the universe cooled, all of these objects condensed out of a hot background.\u201d<\/p>\n

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To represent this process, the researchers made two plots \u2014 one showing the temperature and density of the universe as it expanded and cooled.<\/p>\n

The other plots out the mass and size of all types of objects in the universe.<\/p>\n

Paper co-author and astrophysicist Vihan Patel \u2014 a former research student at ANU \u2014 said that the project has raised some important questions.<\/p>\n

He explained: \u201cParts of the plot are \u2018forbidden\u2019 \u2014 where objects cannot be denser than black holes, or are so small, quantum mechanics blurs the very nature of what it really means to be a singular object.\u201d<\/p>\n

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The boundaries of the plots and what might lie beyond them also present a major mystery, the team noted.<\/p>\n

Patel said: \u201cAt the smaller end, the place where quantum mechanics and general relativity meet is the smallest possible object \u2014 an instanton.<\/p>\n

\u201cThis plot suggests the universe may have started as an instanton, which has a specific size and mass, rather than a singularity, which is a hypothetical point of infinite density and temperature.<\/p>\n

On the larger end, the plot suggests that if there were nothing \u2014 a complete vacuum \u2014 beyond the observable universe, our universe would be a large, low density black hole.<\/p>\n

\u201cThis is a little scary, but we have good reason to believe that\u2019s not the case.\u201d<\/p>\n

The full findings of the study were published in The American Journal of Physics.<\/p>\n