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: 30,528	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: 11,177	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: 22,742	Last Post By Dishmaster November 15th, 2008, 01:28 PM

Why can't we go faster than the light. Is this speculation physical or mathematical? Started by Math10, September 19th, 2020 06:14 PM	Replies: 3 Views: 125	Last Post By Dywyddyr September 20th, 2020, 04:58 PM
Sanity check about Jupiter's recent closest approach Started by GreatBigBore, July 31st, 2020 02:39 PM	Replies: 0 Views: 1,173	Last Post By GreatBigBore July 31st, 2020, 02:39 PM
Dumb Questions Reborn Started by zinjanthropos, June 29th, 2017 10:20 PM 2 Pages • 1 2	Replies: 127 Views: 8,815	Last Post By geordief May 31st, 2020, 09:59 PM
Astronomers will be able to image Earth-like planets by 2025 Started by alpha015, February 22nd, 2020 01:15 PM	Replies: 2 Views: 1,685	Last Post By Paleoichneum March 2nd, 2020, 02:39 PM
Inside The 24/7 Search For Another Habitable Planet Within 100 Light Years Of Earth Started by alpha015, November 26th, 2019 06:00 PM	Replies: 0 Views: 1,777	Last Post By alpha015 November 26th, 2019, 06:00 PM
The Square Kilometre Array Started by alpha015, November 15th, 2019 06:05 PM	Replies: 2 Views: 1,396	Last Post By Paleoichneum November 16th, 2019, 03:15 PM
Distance between stars. Started by Halliday, August 25th, 2019 11:52 AM	Replies: 2 Views: 2,316	Last Post By tk421 August 25th, 2019, 02:21 PM
Dark matter and galaxies Started by MikeinSpain, August 6th, 2019 11:56 AM	Replies: 40 Views: 2,481	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: 1,677	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: 1,538	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: 1,559	Last Post By Strange July 31st, 2019, 06:32 AM
Red shift Started by BobJeffs, July 22nd, 2018 05:41 PM	Replies: 27 Views: 3,114	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: 1,803	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: 2,013	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: 1,974	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: 3,481	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: 4,211	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: 2,284	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: 2,234	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: 2,630	Last Post By Vexspits December 23rd, 2018, 12:10 PM