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Space and Astronomy Thread |
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#3001 |
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Astronomers thankfully are a cautious bunch, and not given to "a study" and "new research suggests" type headlines about planet 9. It is one of several theories.
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#3002 |
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Join Date: Jun 2012
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Quote:
Astronomers thankfully are a cautious bunch, and not given to "a study" and "new research suggests" type headlines about planet 9. It is one of several theories.
The issue of why no aliens and that it's because they are all dead or nothing more than microbial fossils around the universe that cannot manage to develop further, posted in the links earlier up thread was interesting. I'm not sure I buy into that explanation myself. I prefer that it's just a matter of the incredibly huge timescales involved and that even long lived advanced civilisations will flick into and out of existence at entirely different times and never overlap, certainly within any meaningful noticeable range of each other. |
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#3003 |
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Join Date: Feb 2014
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A very beautiful new animation of a flight over Ceres.
![]() http://phys.org/news/2016-01-animati...ght-ceres.html |
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#3004 |
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Join Date: Mar 2014
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Quote:
A very beautiful new animation of a flight over Ceres.
![]() http://phys.org/news/2016-01-animati...ght-ceres.html |
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#3005 |
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Join Date: Mar 2014
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Well hello there good looking.
http://www.cnn.com/2012/08/14/tech/g...ver/index.html |
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#3006 |
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Join Date: Oct 2011
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Interesting article on Ars about a hypothetical rescue mission to Columbia.
If they had realised how seriously the heat shield was damaged on launch. Lengthy, but beautifully written. Link |
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#3007 |
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#3008 |
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Join Date: Feb 2014
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#3010 |
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Join Date: Feb 2014
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The floatings hills of Pluto and more on the mysterious phenomena of the flickering star (first attributed to a possible alien 'mega-structure').
![]() http://www.livescience.com/53620-plu...om-livescience http://www.livescience.com/53634-ali...continues.html |
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#3011 |
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Join Date: Feb 2014
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What are the odds of you being struck by a meteorite?
![]() http://news.nationalgeographic.com/2...bability-odds/ |
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#3012 |
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Join Date: May 2011
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Gravitational waves confirmed, as predicted by Einstein.
Congratulations to everyone involved. It's an amazing achievement. A Nobel prize must be inevitable. Live feed here: https://www.youtube.com/watch?v=c7293kAiPZw |
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#3013 |
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Join Date: Nov 2002
Posts: 76,816
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Brilliant !
fantastic discovery.........further confirmation of Einstein's theory Remarkable how much they can tell from a few milliseconds blip.........that the distortion comes from the merger of two black holes about 1.2 billion light years away in the direction of the Magellanic Cloud.......oh and we know their approximate solar masses as well
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#3014 |
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Join Date: May 2011
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Quote:
Brilliant !
fantastic discovery.........further confirmation of Einstein's theory Remarkable how much they can tell from a few milliseconds blip.........that the distortion comes from the merger of two black holes about 1.2 billion light years away in the direction of the Magellanic Cloud.......oh and we know their approximate solar masses as well ![]() It always amazes me that bipedal mammals should've evolved to the point where our brains are capable of such vast accomplishments. It's almost beyond belief when you stop to think of it. |
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#3015 |
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Remarkable achievement, even Einstein didn't think we'd ever be able to actually detect them, now he's been proved right about their existence.
He was a rather clever bloke that Einstein. |
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#3016 |
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Definitely a Nobel prize for the team... fabulous to finally get experimental evidence for this and now the door will be open to even more research.
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#3017 |
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Definitely a Nobel prize for the team... fabulous to finally get experimental evidence for this and now the door will be open to even more research.
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#3018 |
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Incredible to read about this - amazing achievement by the team.
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#3019 |
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This must be one of the longest running search ever. I first heard of this back in 1969 when someone was building giant aluminium cylinders in order to detect gravity waves. It has taken a long time.
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#3020 |
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It's a shame Nobel prizes can't be awarded posthumously. It seems rather odd to think that Einstein got his for his work on the photoelectric effect. He ought to have racked up at least one more for General Relativity.
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#3021 |
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Join Date: Dec 2004
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This must be one of the longest running search ever. I first heard of this back in 1969 when someone was building giant aluminium cylinders in order to detect gravity waves. It has taken a long time.
Just googled him: Joseph Weber. And although his own claims to have detected gravitational waves were discredited, he did lay the experimental foundations for subsequent work. |
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#3022 |
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It's hard to overstate both the difficulty and sheer complexity of the achievement and its significance for astronomy and our understanding of the Universe.
It always amazes me that bipedal mammals should've evolved to the point where our brains are capable of such vast accomplishments. It's almost beyond belief when you stop to think of it. But seriously. I am not sure why this is a big deal in terms of "our" understanding of the universe. There is no new physics involved just an additional confirmation of Einsteins theory - which has been confirmed many times before ... Mercury's orbit, light deflection, gravitational redshifts ... In terms of practicality it does seem to have given a few physicists / astronomers an emotional boost that their methods for detecting gravity waves works - which is giving them confidence that they will receive more state funding with the hope they can detect more black holes colliding with each other and other objects presumably. With so many supernovas occurring in the universe one wonders why they haven't detected gravity waves from them - presumably because those gravity waves are smaller?? |
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#3023 |
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Join Date: Nov 2002
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With so many supernovas occurring in the universe one wonders why they haven't detected gravity waves from them - presumably because those gravity waves are smaller??
I stand to be corrected though as obviously it's pretty complicated.......
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#3024 |
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Gravitational waves confirmed, as predicted by Einstein.
Congratulations to everyone involved. It's an amazing achievement. A Nobel prize must be inevitable. Live feed here: https://www.youtube.com/watch?v=c7293kAiPZw |
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#3025 |
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Join Date: Dec 2004
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I wouldn't have thought a supernova would produce gravitational waves......it's the interaction of two bodies that produce waves or ripples
I stand to be corrected though as obviously it's pretty complicated....... ![]() A couple of nice snippets about the precision of the Advanced LIGO detectors: they can detect a change in length equal to one thousandth of the radius of a proton (itself 100 thousand times smaller than an atom). This is like being able to detect a change in the distance from our solar system to the nearest star equal to the width of a human hair. |
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