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Topics	Replies	Views	Last post
Famous Scientists, Doctors and Inventors \ Will I post a link for some new Feynman videos here? Started by geordief	0	1487	Last post by geordief 02/04/2021 17:00:38
New Theories \ Is the speed of a light a consequence of ? Started by Michael Sally	96	1573	Last post by Kryptid 01/04/2021 16:53:09
Physics, Astronomy & Cosmology \ Centre of the universe? Started by doughorrigan	18	770	Last post by CliffordK 30/03/2021 19:00:40
Physics, Astronomy & Cosmology \ How does mass-energy curve spacetime? Started by geordief	16	669	Last post by Zer0 08/03/2021 15:55:04
Physics, Astronomy & Cosmology \ What is space & time(According to Einstein's theory of relativity)? Started by Dhruv	8	429	Last post by Halc 24/02/2021 04:17:47
Physics, Astronomy & Cosmology \ What happens to the spacetime interval between two events as they approach a BH? Started by geordief	13	509	Last post by Halc 20/02/2021 16:19:26
Physics, Astronomy & Cosmology \ did the universe begin life inside a black hole? Started by tony liddicoat	6	656	Last post by tony liddicoat 09/02/2021 13:58:42
Physics, Astronomy & Cosmology \ Are there any serious ideas floating around about Wormholes? Started by geordief	4	511	Last post by geordief 22/12/2020 11:46:35
Physics, Astronomy & Cosmology \ What is the smallest theoretical magnet? Started by geordief	6	629	Last post by evan_au 15/12/2020 19:44:27
Physics, Astronomy & Cosmology \ How does light move in a vacuum? Started by geordief	22	1536	Last post by JasonBailey 11/12/2020 13:00:27
Physics, Astronomy & Cosmology \ What is a small classical example of em radiation? Started by geordief	2	473	Last post by evan_au 22/06/2020 23:51:13
Physics, Astronomy & Cosmology \ Does gravity attract masses in space, or does it curve space between them? Started by Alan McDougall	101	22747	Last post by PmbPhy 27/05/2020 04:59:52
Physics, Astronomy & Cosmology \ Did Einstein "kick the can" on gravity? Started by Outcast	47	23307	Last post by yor_on 27/03/2020 20:42:14
Physics, Astronomy & Cosmology \ What's wrong with the gravity analogy? Started by Outcast	21	11116	Last post by jeffreyH 25/03/2020 20:07:02
Physics, Astronomy & Cosmology \ How realistic is the science on "Star Trek" (and other SF?) Started by clueless	25	4695	Last post by instagyu 09/03/2020 17:53:01
New Theories \ Troll theory: How does gravity work? Started by Starlight	10	1426	Last post by Origin 20/02/2020 19:34:57
Physics, Astronomy & Cosmology \ Is the equivalence principle only approximately correct? Started by geordief	19	2367	Last post by Colin2B 12/01/2020 23:57:28
Physics, Astronomy & Cosmology \ When did gravity begin? Started by geordief	10	1456	Last post by yor_on 15/12/2019 22:19:41
Physics, Astronomy & Cosmology \ Is the vacuum synonymous with the absence of a medium? Started by geordief	3	947	Last post by jeffreyH 07/11/2019 19:54:39
Physics, Astronomy & Cosmology \ Why do the laws of physics break down in a black hole? Started by Nadeem Gabbani	3	1115	Last post by yor_on 06/11/2019 09:06:03