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: 25,714	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: 8,742	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: 20,418	Last Post By Dishmaster November 15th, 2008, 01:28 PM

Distance between stars. Started by Halliday, August 25th, 2019 11:52 AM	Replies: 2 Views: 947	Last Post By tk421 August 25th, 2019, 02:21 PM
Dumb Questions Reborn Started by zinjanthropos, June 29th, 2017 10:20 PM	Replies: 92 Views: 5,166	Last Post By zinjanthropos August 22nd, 2019, 03:09 PM
Dark matter and galaxies Started by MikeinSpain, August 6th, 2019 11:56 AM	Replies: 40 Views: 1,028	Last Post By Strange August 13th, 2019, 02:32 AM
The Habitable Exoplanet Hunting Project Started by alpha015, July 13th, 2019 07:52 AM	Replies: 1 Views: 572	Last Post By alpha015 August 6th, 2019, 07:20 AM
What are the types of planet? Started by xingha, August 3rd, 2019 02:25 AM	Replies: 0 Views: 431	Last Post By xingha August 3rd, 2019, 02:25 AM
I have different red-shift question Started by tsmspace, July 31st, 2019 03:46 AM	Replies: 1 Views: 435	Last Post By Strange July 31st, 2019, 06:32 AM
Red shift Started by BobJeffs, July 22nd, 2018 05:41 PM	Replies: 27 Views: 1,870	Last Post By Strange July 29th, 2019, 02:59 PM
A basic question about the big bang Started by Courage, July 17th, 2019 11:18 AM	Replies: 4 Views: 653	Last Post By Dywyddyr July 24th, 2019, 10:31 AM
Cosmic Navigation Started by Jason Summer, July 2nd, 2019 01:49 PM	Replies: 12 Views: 709	Last Post By justoldbob July 24th, 2019, 10:03 AM
time Space Fabric Started by Toshiyori, June 26th, 2019 10:24 AM	Replies: 6 Views: 775	Last Post By justoldbob July 24th, 2019, 09:54 AM
Block out the sun. Started by flantoons, March 19th, 2019 03:20 AM	Replies: 0 Views: 2,339	Last Post By flantoons March 19th, 2019, 03:20 AM
Could we be on the other side of a black hole? Started by filix, March 18th, 2019 08:24 AM	Replies: 0 Views: 3,081	Last Post By filix March 18th, 2019, 08:24 AM
1919 arthur edington question Started by jfoldbar, February 2nd, 2019 04:48 PM	Replies: 3 Views: 1,169	Last Post By jfoldbar February 2nd, 2019, 06:43 PM
Why do we gain sunlite "after the winter solstice" in the afternoon and not in the morning? Started by filix, January 18th, 2019 10:08 AM	Replies: 5 Views: 1,131	Last Post By filix January 19th, 2019, 09:10 AM
effects of gravity Started by Genesis, December 1st, 2018 05:28 AM	Replies: 4 Views: 1,506	Last Post By Vexspits December 23rd, 2018, 12:10 PM
Stephen Hawking Says 'There Is No God' Started by cosmictraveler, September 25th, 2014 04:06 PM	Replies: 51 Views: 3,966	Last Post By ox November 25th, 2018, 08:20 AM
Is the Big Bang still banging? Started by GiantEvil, October 19th, 2018 02:17 PM	Replies: 4 Views: 1,502	Last Post By ox October 20th, 2018, 06:30 AM
Mars. Started by Halliday, July 28th, 2018 07:57 AM	Replies: 22 Views: 2,552	Last Post By mmatt9876 October 9th, 2018, 05:07 PM
Variant on giant-impact hypothesis - the origin of continents Started by CEngelbrecht, November 8th, 2017 01:28 PM	Replies: 2 Views: 2,328	Last Post By DaveC426913 May 6th, 2018, 08:21 PM
Presentation: Worldwide Digital Sundial Started by angelsun, February 28th, 2018 03:26 PM	Replies: 3 Views: 1,596	Last Post By DaveC426913 February 28th, 2018, 05:42 PM