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Topics	Replies	Views	Last post
Physics, Astronomy & Cosmology \ The truth is out there, in pictures. Started by 0	132	211651	Last post by Kryptid 24/12/2020 16:39:47
Physics, Astronomy & Cosmology \ We want your space/astronomy pictures! Started by BenV	49	55343	Last post by Radium 20/07/2015 20:49:19
Physics, Astronomy & Cosmology \ Why is a hollow pipe stronger than a solid one? Started by QuantumClue	33	49095	Last post by damocles 03/05/2013 07:14:02
Physics, Astronomy & Cosmology \ How to build a D.I.Y. radio telescope Started by williampcochran	12	18194	Last post by Soul Surfer 05/11/2011 18:22:27
Physics, Astronomy & Cosmology \ Where does the remainder of the energy from a mass falling into a blackhole go? Started by jartza	168	56452	Last post by yor_on 02/02/2011 00:29:16
Physics, Astronomy & Cosmology \ What is the maximum speed of information? Started by Airthumbs	71	25922	Last post by yor_on 31/01/2011 23:37:48
Physics, Astronomy & Cosmology \ How does an object behave in a theoretical tunnel through the Earth's centre? Started by Foolosophy	71	26277	Last post by jartza 20/01/2011 18:51:56
Physics, Astronomy & Cosmology \ Why don't people fall off the bottom of the Earth? Started by Shaun Rensburg	8	15027	Last post by CliffordK 14/01/2011 00:01:04
Physics, Astronomy & Cosmology \ Does Hawking radiation selectively emit matter, rather than antimatter? Started by 0	5	6050	Last post by yor_on 13/01/2011 12:32:35
Physics, Astronomy & Cosmology \ What is the Dirac equation? Started by QuantumClue	50	23892	Last post by yor_on 13/01/2011 04:06:25
Physics, Astronomy & Cosmology \ What is stronger than steel? Started by QuantumClue	16	10470	Last post by yor_on 13/01/2011 01:17:47
Physics, Astronomy & Cosmology \ Do gravitational waves propagate faster than light waves? Started by williampcochran	83	30915	Last post by JP 12/01/2011 02:02:01
Physics, Astronomy & Cosmology \ Are Black Holes possible? Started by QuantumClue	8	3203	Last post by QuantumClue 11/01/2011 17:27:25
Physics, Astronomy & Cosmology \ How do virtual particles evaporate black holes? Started by Eric A. Taylor	24	12517	Last post by yor_on 10/01/2011 17:03:48
Physics, Astronomy & Cosmology \ Does ice reflect radiation from the Sun? Started by The Scientist	3	3368	Last post by Soul Surfer 09/01/2011 22:48:10
Physics, Astronomy & Cosmology \ How do boomerangs work? Started by The Scientist	9	5225	Last post by Foolosophy 09/01/2011 11:17:47
Physics, Astronomy & Cosmology \ Is a black hole infinitely dense? Started by rwjefferson	73	26684	Last post by yor_on 09/01/2011 04:55:59
Geology, Palaeontology & Archaeology \ Can someone help me identify these rocks? Started by davidnyc64	7	4863	Last post by JimBob 08/01/2011 20:17:56
Geology, Palaeontology & Archaeology \ Is this a real fossilised fish? Started by folieimposee	19	16001	Last post by Foolosophy 08/01/2011 11:33:59
Geology, Palaeontology & Archaeology \ Can someone help identify the orgin of this cross "+" in this strange rock? Started by Mgretchen	10	11148	Last post by Foolosophy 08/01/2011 11:25:32