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Trio of dead stars upholds a key part of Einstein’s theory of gravity
Science News ^ | 12 Jan, 2018 | EMILY CONOVER

Posted on 01/13/2018 9:09:23 AM PST by MtnClimber

Observations of a trio of dead stars have confirmed that a foundation of Einstein’s gravitational theory holds even for ultradense objects with strong gravitational fields.

The complex orbital dance of the three former stars conforms to a rule known as the strong equivalence principle, researchers reported January 10 at a meeting of the American Astronomical Society. That agreement limits theories that predict Einstein’s theory, general relativity, should fail at some level.

According to general relativity, an object’s composition has no impact on how gravity pulls on it: Earth’s gravity accelerates a sphere of iron at the same rate as a sphere of lead. That’s what’s known as the weak equivalence principle.......

“We’re asking, ‘How does gravity fall?’” says astronomer Anne Archibald of the University of Amsterdam, who presented the preliminary result at the meeting. “That sounds weird, but Einstein says energy and mass are the same.” That means that the energy bound up in a gravitational field can fall just as mass can. If the strong equivalence principle were violated, an object with an intense gravitational field would fall with a different acceleration than one with a weaker field.

(Excerpt) Read more at sciencenews.org ...


TOPICS: Astronomy; Science
KEYWORDS: astronomy; galileo; generalrelativity; haltonarp; j03371715; psrj03371715; pulsar; relativity; science; stringtheory; strongequivalence; weakequivalence

1 posted on 01/13/2018 9:09:23 AM PST by MtnClimber
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To: MtnClimber

e=mc^2


2 posted on 01/13/2018 9:11:21 AM PST by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: MtnClimber

3 posted on 01/13/2018 9:16:50 AM PST by Jim W N
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To: MtnClimber

e=me2


4 posted on 01/13/2018 9:17:17 AM PST by Jim W N
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To: MtnClimber

Dean Martin, Frank Sanatra and Sammy Davis Jr.?


5 posted on 01/13/2018 9:19:17 AM PST by Bulwinkle (Alec, a.k.a. Daffy Duck)
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To: Jim 0216

Babs Streisand, Alec Baldwin and Maria Carey: “Indubitably. We concur.”


6 posted on 01/13/2018 9:21:23 AM PST by tumblindice (America's founding fathers: all white armed conservatives)
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To: MtnClimber

Lets see...ultra dense Stars....
Matt Damion, Alex Baldwin and Cher
And of course the Universe revolves around their Star.


7 posted on 01/13/2018 9:22:34 AM PST by Zathras
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To: MtnClimber

8 posted on 01/13/2018 9:23:31 AM PST by DoodleBob
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To: MtnClimber

9 posted on 01/13/2018 9:33:56 AM PST by Jim W N
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To: MtnClimber

The wild-haired german jew for the zillionth time proves to be probably the smartest guy who ever drew breath. Even today, after having it all explained in detail with graphics laden documentaries, most people still can’t wrap their minds around what his theories really mean.


10 posted on 01/13/2018 9:44:51 AM PST by SpaceBar
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To: SpaceBar

The wild-haired german jew for the zillionth time proves to be probably the smartest guy who ever drew breath.


If you define smarts by physics and math. There are different kinds of smarts. Aristotle, Augustine, and Aquinas were no slouches—and Plato wasn’t bad either. Remember that those coming later are able to build on the foundations of those who came before.


11 posted on 01/13/2018 9:50:11 AM PST by Hieronymus (It is terrible to contemplate how few politicians are hanged. --G. K. Chesterton)
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To: Jim 0216

Not really “stars”, but Don Lemmon, Anderson Cooper, and Jake Tapper.


12 posted on 01/13/2018 9:55:58 AM PST by PJBankard
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To: MtnClimber
Was expecting washed up Hollywood

Ed

13 posted on 01/13/2018 11:55:10 AM PST by husky ed (FOX NEWS ALERT "Generalissimo Francisco Franco is still dead" THIS HAS BEEN A FOX NEWS ALERT)
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To: Jim 0216; MtnClimber
e = mc2
e = mc<sup>2</sup>

14 posted on 01/13/2018 1:22:45 PM PST by conservatism_IS_compassion (Presses can be 'associated,' or presses can be independent. Demand independent presses.)
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To: Hieronymus

What could all these guys do with a computer?
Or Aristotle, Augustine and Aquinas with even pencil and paper, access to a telescope.


15 posted on 01/13/2018 6:59:16 PM PST by minnesota_bound
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To: 6SJ7; AdmSmith; AFPhys; Arkinsaw; allmost; aristotleman; autumnraine; bajabaja; ...
Thanks MtnClimber.

· String Theory Ping List ·
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General relativity doesn't mesh well with quantum mechanics, the theory that reigns on very small scales. Adjustments to general relativity that attempt to combine these theories tend to result in a violation of the strong equivalence principle, says physicist Clifford Will of the University of Florida in Gainesville, who was not involved with the research.

16 posted on 01/14/2018 1:27:35 PM PST by SunkenCiv (www.tapatalk.com/groups/godsgravesglyphs/, forum.darwincentral.org, www.gopbriefingroom.com)
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To: SunkenCiv

That’s why I tend to like M-Theory... At least the math is consistent.


17 posted on 01/14/2018 4:37:44 PM PST by onedoug
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