Forum: Astronomy & Cosmology

The scientific study of matter in outer space and the astrophysical study of the history, structure, and constituent dynamics of the universe..

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Sticky: Interesting astronomical events and observing tips Started by ricci70, October 20th, 2008 04:23 AM 2 Pages • 1 2	Replies: 129 Views: 28,850	Last Post By ricci70 November 2nd, 2013, 08:36 AM
Sticky: The basis of modern cosmology Started by DrRocket, January 4th, 2011 01:05 AM	Replies: 25 Views: 10,310	Last Post By Dishmaster September 20th, 2011, 05:34 PM
Sticky: Rules on homework help - READ THIS BEFORE POSTING OR HELPING Started by Dishmaster, November 15th, 2008 01:28 PM	Replies: 0 Views: 21,894	Last Post By Dishmaster November 15th, 2008, 01:28 PM

Eclipse 2017 Started by GiantEvil, August 20th, 2017 08:26 AM	Replies: 10 Views: 1,085	Last Post By Janus August 23rd, 2017, 04:44 PM
GMC or what? Started by GiantEvil, June 8th, 2017 01:33 PM	Replies: 1 Views: 981	Last Post By Pong August 16th, 2017, 01:50 AM
Why not have a bathing pool in space? Started by CEngelbrecht, August 9th, 2017 11:28 AM	Replies: 14 Views: 1,148	Last Post By CEngelbrecht August 15th, 2017, 09:34 PM
Why is the BBT believed to be an accelerating expansion? Started by kojax, October 4th, 2014 12:07 AM	Replies: 21 Views: 1,197	Last Post By tk421 October 11th, 2014, 12:26 AM
Rare Selenelion on wednesday Started by GoldenRatio, October 5th, 2014 08:15 PM	Replies: 5 Views: 866	Last Post By 甘肃人 October 6th, 2014, 10:02 PM
Dark matter and doppler effect Started by Le Repteux, October 1st, 2014 08:52 AM	Replies: 5 Views: 1,083	Last Post By kojax October 2nd, 2014, 09:01 PM
How do we know that black holes form? Started by kojax, September 28th, 2014 01:28 PM	Replies: 8 Views: 1,019	Last Post By Markus Hanke October 1st, 2014, 11:44 PM
Concening Europa's Eclipse Times? Started by oliver_curtis, September 29th, 2014 05:34 PM	Replies: 6 Views: 1,164	Last Post By John Galt September 30th, 2014, 08:20 PM
What is known about the Surfaces of the Gas Giants? Started by 甘肃人, September 30th, 2014 10:52 AM	Replies: 2 Views: 762	Last Post By John Galt September 30th, 2014, 08:14 PM
What would the universe look like if inflation did not occur? Started by A_Seagull, September 29th, 2014 05:26 PM	Replies: 4 Views: 746	Last Post By Implicate Order September 30th, 2014, 01:13 AM
Black holes don't exist and neither does the big bang theory. Started by plentyofroomatthebottom, September 28th, 2014 03:11 AM	Replies: 7 Views: 1,014	Last Post By astromark September 28th, 2014, 01:35 PM
Radio Astronomy Started by Challenger-X2, September 21st, 2014 04:52 AM	Replies: 3 Views: 863	Last Post By tk421 September 22nd, 2014, 06:31 PM
Could you freeze the sun? Started by Ginseng, July 30th, 2014 08:20 AM	Replies: 16 Views: 3,113	Last Post By 甘肃人 September 20th, 2014, 09:19 AM
Will we colonize the solar system in my life time? Started by Gurgeh, September 15th, 2014 01:47 AM	Replies: 43 Views: 1,545	Last Post By GoldenRatio September 20th, 2014, 04:29 AM
Black line crosses moon Started by MoonWolf, March 12th, 2009 09:41 AM 2 Pages • 1 2	Replies: 152 Views: 29,251	Last Post By John Galt September 19th, 2014, 11:10 AM
Should mass vanish if 0 Kelvin is actually enforced into a system? Started by Lia, September 17th, 2014 12:54 PM	Replies: 3 Views: 590	Last Post By mathman September 17th, 2014, 04:34 PM
0 Kelvin PPL!! Started by Lia, September 11th, 2014 10:51 AM	Replies: 2 Views: 699	Last Post By PhDemon September 11th, 2014, 03:49 PM
Sept., 11 th 2014 ~ NEWS.. Started by astromark, September 10th, 2014 11:47 PM	Replies: 3 Views: 666	Last Post By dan hunter September 11th, 2014, 04:40 AM
Black Hole-Particles-Speed of light Started by Redic, September 4th, 2014 06:54 PM	Replies: 9 Views: 1,008	Last Post By astromark September 9th, 2014, 12:53 AM
Is it possible to have a disc planet? Started by hencook, September 3rd, 2014 12:49 AM	Replies: 3 Views: 603	Last Post By exchemist September 5th, 2014, 04:21 AM