Cosmic Strings — They May Have Found One - CR4 Discussion Thread

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Rixter Guru Join Date: Apr 2010 Location: About 4000 miles from the center of the earth (+/-100 mi) Posts: 9458 Good Answers: 1081	Cosmic Strings — They May Have Found One 10/13/2023 9:18 PM
	What is a cosmic string? Matt O'Dowd, as usual, does an excellent job of explaining. "Cosmic strings are like tiny, one-dimensional wrinkles or cracks through the fields of the Universe, thought to have been created at the very dawn of time as reality stretched and then froze into place." There seems to be some evidence, but the jury's still out... https://www.sciencealert.com/we-may-have-just-found-evidence-of-a-cosmic-string-a-crease-in-the-universe
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dkwarner Guru Join Date: May 2006 Location: Placerville, CA (38° 45N, 120° 47'W) Posts: 6083 Good Answers: 245	#1 Re: Cosmic Strings - They may have found one 10/15/2023 12:17 AM
	Thanks for the link! He may well have done an excellent job of explaining, but I didn't do an excellent job of understanding... I do believe I have a slightly better concept of cosmic strings. I keep getting reminded that I'm an old classical applied physicist (among other things...), and will probably remain so! __________________ Teaching is a great experience, but there is no better teacher than experience.
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Rixter Guru Join Date: Apr 2010 Location: About 4000 miles from the center of the earth (+/-100 mi) Posts: 9458 Good Answers: 1081	#2 In reply to #1 Re: Cosmic Strings - They may have found one 10/15/2023 8:20 PM
	I'm with you. I'm not sure what's physics and what's just a mathematical model. The theory guys have run ahead without support from the experimentalists, IMHO. The theories may all hang together, but we can't tell if it's real without physical evidence. Maybe this is it. Time will tell.
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agua_doc Guru Join Date: Dec 2006 Location: Brecksville, OH Posts: 1614 Good Answers: 18	#3 In reply to #1 Re: Cosmic Strings - They may have found one 11/11/2023 10:11 AM
	I'm an old classical applied physicist (among other things...), and will probably remain so! Me too! __________________ "Consensus Science got us into this mess, then why can't it get us out?" : Rephrase of Will Rogers Comment
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Lehman57 Guru Join Date: Sep 2009 Location: Louisville, OH Posts: 1691 Good Answers: 33	#4 In reply to #3 Re: Cosmic Strings - They may have found one 11/11/2023 11:43 PM
	Same. But I also remember that it took a long time to show that Einstein's theories were correct. I think they defaulted to the Classical Theory unless special/extreme conditions were encountered. I also like to call a theory "elegant" if it doesn't need a bunch of ifs, ands, buts, and exceptions to make it work. Elegant is good! __________________ Lehman57
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agua_doc (1); dkwarner (1); Lehman57 (1); Rixter (1)