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Topics	Replies	Views	Last post
New Theories \ How gravity works in spiral galaxy? Started by Dave Lev	1000	40598	Last post by Halc 08/12/2019 14:38:16
Physics, Astronomy & Cosmology \ A reported object travelling faster than the speed of light? Started by amalia	10	508	Last post by Janus 28/11/2019 22:04:14
New Theories \ Is the designation "positive" and "negative" in electricity arbitrary? Started by Mitko Gorgiev	10	224	Last post by Bored chemist 27/11/2019 22:33:00
Physics, Astronomy & Cosmology \ How can Mars' sunset be blue? Started by amalia	13	394	Last post by Bored chemist 25/11/2019 13:24:10
New Theories \ Do you want to be more clever than Einstein? Started by xersanozgen	250	7911	Last post by xersanozgen 25/11/2019 09:14:24
Physics, Astronomy & Cosmology \ How do protons and electrons react? Started by scientizscht	5	287	Last post by evan_au 23/11/2019 17:33:17
Physics, Astronomy & Cosmology \ Can we detect acceleration in free fall? Started by jeffreyH	5	319	Last post by Petrochemicals 23/11/2019 09:58:11
Physics, Astronomy & Cosmology \ How much fuel would we need to get to Mars? Started by amalia	1	156	Last post by Janus 22/11/2019 18:22:15
New Theories \ Does Einstein’s Equivalence Principle have any physical standing? Started by McQueen	27	661	Last post by McQueen 20/11/2019 05:29:47
Chemistry \ Where does the spent car tire rubber go? Started by MarianaM	7	497	Last post by set fair 11/11/2019 23:33:59
That CAN'T be true! \ Do you weigh less when the moon is directly overhead? Started by Alandriel	17	39307	Last post by syhprum 10/11/2019 11:52:56
Physics, Astronomy & Cosmology \ The truth is out there, in pictures. Started by 0	130	182024	Last post by Foregly 04/11/2019 07:04:47
Physics, Astronomy & Cosmology \ What would happen to a bullet fired from the International Space Station? Started by chris	3	233	Last post by Petrochemicals 03/11/2019 04:10:31
Physics, Astronomy & Cosmology \ Is light an independent entity, or is it an effect of a larger mechanism ? Started by Petrochemicals	15	753	Last post by Petrochemicals 01/11/2019 04:56:15
Physics, Astronomy & Cosmology \ Why are my atoms not flying apart? Please Hurry - May Have Limited Time Left Started by joesc	18	900	Last post by CPT ArkAngel 28/10/2019 01:14:52
Physics, Astronomy & Cosmology \ Pulsars, why is it we can't see them? Started by Europan Ocean	9	352	Last post by evan_au 25/10/2019 22:03:39
Physics, Astronomy & Cosmology \ What motion will weights released from a spinning spacecraft describe? Started by Hayseed	32	720	Last post by Hayseed 22/10/2019 06:35:35
Physics, Astronomy & Cosmology \ What is the cosmic microwave background? Started by HelpMe929	54	1442	Last post by Halc 18/10/2019 12:30:40
Marine Science \ How do tides work? Started by MarianaM	2	270	Last post by evan_au 15/10/2019 23:31:25
Physics, Astronomy & Cosmology \ Do half lives of radioactive materials affected by gravity potential? Started by hamdani yusuf	13	443	Last post by Bored chemist 10/10/2019 20:00:20