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Neil deGrasse Tyson Fan Club
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Acho a teoria da relatividade geral bem óbvia e sucinta, mas felizmente os cientistas precisam de provas para tudo ...
Que bom seria, se todo mundo fosse como os cientistas, não é pessoal ?
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"  This result, however, does not absolutely exclude detection of gravitons; one can imagine filling the solar system and beyond with tiny detectors. At this point, though, the possibilities go out of sight.
  Before that point, we must address two other issues. The first is noise. Any detector needs to be shielded against background noise. Two serious noise sources are neutrinos and cosmic rays. The cross section for the interaction of neutrinos with matter is about  0−45cm2 , or at least twenty orders of magnitude greater than the gravito-electric cross section. In a typical white dwarf, neutrino emission exceeds photon emission[23], meaning that 1013−14 neutrinos are emitted for every graviton. Therefore, without shielding, one would expect 1033−34 neutrino events for every graviton event. A shield should be thicker than the mean-free-path for neutrinos, which for materials of ordinary density amounts to light years. Such a shield would collapse into a black hole. Unless one can find another way to discriminate against neutrinos, this appears to make detection of thermal gravitons impossible. In light of this result, we do not pursue shielding against cosmic rays, which would activate the detector material, inundating it with secondary particles.  "

From ;
Can Gravitons Be Detected?
Tony Rothman

and Stephen Boughn

∗ Princeton University,
Princeton, NJ 08544 † Haverford College,
Haverford, PA 19041 LATEX-ed February 4, 2008

http://arxiv.org/pdf/gr-qc/0601043v3.pdf
 
In Today's Lunch with a "Side Order of Science": 
Neil deGrasse Tyson explains gravity waves, gravitons and LIGO to co-host Leighann Lord. (NOTE: This was previously recorded last year, before today’s announcement!) https://www.youtube.com/watch?v=EH70kTm25Es #SOS
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J White
 
It is sad this mouthpiece shill of NAZA is getting all the wrong attention. He needs to man up and debate the Flat Earthers. If science is on his side, he should be able to shut them down ASAP...but he can't, because he KNOWS he can't refute their arguments...wow, does he even science!!
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New Video: Go behind the scenes at #StarTalkLive! at SF Sketchfest 2016 with @StephEvz43 and @Pillownaut https://www.youtube.com/watch?v=Q9fSl7p_v0s
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In Today's #DarwinDay Lunch with a "Side Order of Science”: 
Bill Nye explains Darwin's Theory of Evolution to Neil deGrasse Tyson and Chuck Nice: https://www.youtube.com/watch?v=mm4AIjmgV4g #SOS
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"That last LinkedIn request set a new record for the most energetic physical event ever observed. Maybe we should respond."
"Nah."

http://m.xkcd.com/1642/

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;
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He credits his transformation to watching “The Devil Wears Prada.”
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+Karlen Kendrick Yes, I know he's a troll.  I looked at his profile.  The poke was at his honor or lack thereof.  He and JJ, as I've said before, practice pigeon management.  They fly in, crap all over the place and fly out to find another place to practice.  Karlen, thank you for the reminder.
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"  Of course all of this is under the assumptions that the rumors are true, and also that LIGO’s results are confirmed by further observations. Let’s hope that any claims of discovery survive the careful and proper scrutiny to which they will now be subjected. If so, then prizes of the highest level are clearly in store, and will be doled out to quite a few people, experimenters for designing and building LIGO and theorists for predicting what black-hole mergers would look like. As always, though, the only prize that really matters is given by Nature… and the many scientists and engineers who have contributed to Advanced LIGO may have already won.  "
Matt Strassler originally shared:
 
Advance Thoughts on #LIGO: why (if rumors correct) gravitational waves aren't the big story today

Scarcely a hundred years after Einstein revealed the equations for his theory of gravity (“General Relativity”) on November 25th, 1915, the world today awaits an announcement from the LIGO experiment, where the G in LIGO stands for Gravity. (The full…
Scarcely a hundred years after Einstein revealed the equations for his theory of gravity (``General Relativity'') on November 25th, 1915, the world today awaits an announcement from the LIGO experi...
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Everything you need to know about gravitational waves
Last year in September, upgrades of the gravitational wave interferometer LIGO were completed. The experiment – now named advanced LIGO – searches for gravitational waves emitted in the merger of two black holes. Such a merger signal should fall straight...
Last year in September, upgrades of the gravitational wave interferometer LIGO were completed. The experiment – now named advanced LIGO – searches for gravitational waves emitted in the merger of two black holes. Such a merge...
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+Philip Andrew​ the announcement will be tomorrow.
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Neil deGrasse Tyson ‏@neiltyson 
Today is the first New Moon after Jan  21sr. Happy New Year to Chinese people and all who choose to be Chinese for a day.
https://twitter.com/neiltyson/status/696885495452864512

Image: http://mybestfengshui.com/?cat=7
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Dedicated to encouraging the REAL Neil deGrasse Tyson to participate on Google Plus
Introduction
We are in the universe, and the universe is in us 

 (expropriated from Wikipedia )

Neil deGrasse Tyson (born October 5, 1958) is an American astrophysicist, a science communicator, the Frederick P. Rose Director of the Hayden Planetariumat the Rose Center for Earth and Space, and a Research Associate in the Department of Astrophysics at the American Museum of Natural History. Since 2006 he has hosted the educational science television show NOVA scienceNOW on PBS, and has been a frequent guest onThe Daily ShowThe Colbert ReportReal Time with Bill Maher, and Jeopardy!. It was announced on August 5, 2011 that Tyson will be hosting a new sequel to Carl Sagan's Cosmos: A Personal Voyage TV series.[1] 


(Established Jan 17, 2012)
Curated by +Don Denesiuk

*Note to users who follow this page after 3:05 PM June 15, 2012*
Google Plus has a cap of 5000 people in Circles total and the above Date and time is when we crossed that threshold. As a result of this policy I cannot Circle more people at this time with out un-Circling some early adopters. My current feelings are that would be unfair to them so please know I appreciate your interest but unfortunately I won't be Circling you until the above policy changes. 
Thank-you for your interest and understanding.

*Curator's Note*
To parents of young children ;
Your discretion is advised as episodes of strong language, Agnosticism, Free Thinking and Science may occur here with no further warning. You may want to use these an a teaching opportunity to discuss social conventions and human reproduction with your off-spring.