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Topics	Replies	Views	Last post
Physics, Astronomy & Cosmology \ Could gravity be like temperature and not be able to be quantised? Started by RobC	9	731	Last post by evan_au 02/10/2020 02:15:46
Physics, Astronomy & Cosmology \ I rate 'many worlds' people together with flat-earthers. Am I wrong? Started by RobC	11	617	Last post by Petrochemicals 16/08/2020 20:30:40
Physics, Astronomy & Cosmology \ How do we know the Universe is expanding, and expanding into nothing? Started by 0	43	13727	Last post by CPT ArkAngel 22/07/2020 05:10:15
Physics, Astronomy & Cosmology \ An expanding flat universe? Started by Harri	15	810	Last post by Bill S 15/06/2020 14:40:49
Physics, Astronomy & Cosmology \ Has physics made any meaningful progress in the last 40 years? Started by RobC	9	680	Last post by hamdani yusuf 08/06/2020 04:31:05
Physics, Astronomy & Cosmology \ Is the speed of light constant? Started by EvaH	27	1159	Last post by hamdani yusuf 01/06/2020 18:36:41
Physics, Astronomy & Cosmology \ Do electromagnetic waves have a fixed speed? Started by EvaH	20	914	Last post by Bored chemist 24/05/2020 13:04:08
Physics, Astronomy & Cosmology \ Why do some burnt matches float and others sink? Started by nudephil	1	2738	Last post by RobC 26/02/2020 18:09:55
Physics, Astronomy & Cosmology \ Was the Big Bang the beginning of the universe? Started by Akabiz	305	16899	Last post by Bill S 17/11/2019 13:22:57
Physics, Astronomy & Cosmology \ What happens when both slits are observed by in the double slit experiment? Started by Lloyd	38	4206	Last post by Halc 11/11/2019 14:45:39
Physics, Astronomy & Cosmology \ What is the cosmic microwave background? Started by HelpMe929	54	3317	Last post by Halc 18/10/2019 12:30:40
That CAN'T be true! \ LIGO represents an mirror displacement of what? Started by alright1234	109	8732	Last post by Bored chemist 10/09/2019 20:42:49
Physics, Astronomy & Cosmology \ What are the implications of a change in the Hubble constant? Started by RobC	5	767	Last post by jeffreyH 11/08/2019 15:51:09
Physics, Astronomy & Cosmology \ How well do laymen understand Bell's theorem? Started by jeffreyH	4	851	Last post by Bill S 07/08/2019 17:47:43
Physics, Astronomy & Cosmology \ What is the carbon footprint of Apollo 11? Started by AnkitaA	8	1478	Last post by RandyWilliams 13/07/2019 11:24:25
Physics, Astronomy & Cosmology \ Could String Theory become useful (anytime soon)? Started by evan_au	6	998	Last post by yor_on 18/04/2019 23:00:20
Physics, Astronomy & Cosmology \ Could the universe be a simulation? Started by RobC	12	1101	Last post by alancalverd 16/04/2019 22:40:26
Physics, Astronomy & Cosmology \ Is this simplification of Quantum Erasing correct? Started by HenryBraxton	5	745	Last post by yor_on 15/04/2019 16:58:22
New Theories \ Consolidated empirical evidences disprove black hole (with new evidences) Started by jsaldea12	29	2018	Last post by Kryptid 10/04/2019 22:41:23
Physics, Astronomy & Cosmology \ When will quantum supremacy be achieved? Started by RobC	6	1029	Last post by evan_au 27/03/2019 20:39:08