Discussions ranging from space technology, near-earth and solar system missions, to efforts to understand the large-scale structure of the cosmos.
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Cosmo Calculator Tutorial
by BurtJordaan » February 28th, 2013, 7:32 am
- 3 Comments
- 3245 Views
- Last post by BurtJordaan
February 12th, 2017, 9:20 am
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Mainstream cosmology basics and sources
by Marshall » April 28th, 2007, 5:24 pm
- 23 Comments
- 20540 Views
- Last post by Marshall
May 24th, 2013, 7:24 pm
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SCF Space & Astronomy Library
by Silkworm » August 12th, 2006, 11:35 pm
- 19 Comments
- 23286 Views
- Last post by Marshall
October 18th, 2010, 1:43 pm
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NASA successfully launches TESS satellite.
by Event Horizon » April 19th, 2018, 2:17 am
- 1 Comments
- 67 Views
- Last post by Dave_Oblad
April 19th, 2018, 3:03 pm
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Expansion of the universe
by Kwoodhouse » April 4th, 2018, 11:37 pm
- 9 Comments
- 395 Views
- Last post by Kwoodhouse
April 6th, 2018, 10:02 pm
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Is there an upper limit to how big a black hole can get?
by Kwoodhouse » April 5th, 2018, 12:11 am
- 7 Comments
- 244 Views
- Last post by mitchellmckain
April 5th, 2018, 10:51 pm
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Determining the origin of matter
by Event Horizon » April 4th, 2018, 2:01 pm
- 2 Comments
- 177 Views
- Last post by Watson
April 4th, 2018, 4:32 pm
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The inflation event - Thoughts
by Event Horizon » March 9th, 2018, 9:12 pm
- 1 Comments
- 207 Views
- Last post by bangstrom
March 9th, 2018, 11:21 pm
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395 lb stonyiron meteorite!
by Starmetal » December 31st, 2013, 6:57 pm
- 85 Comments
- 13383 Views
- Last post by Watson
February 28th, 2018, 5:16 pm
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advanced warning of solar weather
by zetreque » December 28th, 2014, 6:59 pm
- 19 Comments
- 4411 Views
- Last post by zetreque
February 25th, 2018, 7:46 pm
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The Great Filter
by hyksos » February 2nd, 2018, 6:49 pm
- 3 Comments
- 364 Views
- Last post by hyksos
February 3rd, 2018, 6:47 pm
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Space gun
by mahesh » November 6th, 2017, 6:04 am
- 10 Comments
- 946 Views
- Last post by BurtJordaan
February 1st, 2018, 5:51 am
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Is Spacetime Flat or Curved ?
by socrat44 » December 21st, 2017, 3:59 am
- 11 Comments
- 940 Views
- Last post by socrat44
January 11th, 2018, 4:37 am
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God particle' or tip of the iceberg?
by socrat44 » December 9th, 2017, 7:35 am
- 0 Comments
- 225 Views
- Last post by socrat44
December 9th, 2017, 7:35 am
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The Universe from Nothing: T=0K. / by Israel Socratus /
by socrat44 » August 6th, 2017, 1:40 am
- 23 Comments
- 1867 Views
- Last post by socrat44
November 21st, 2017, 9:44 am
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Is the universe both infinite and eternal
by Alan McDougall » June 15th, 2017, 12:23 pm
- 15 Comments
- 1409 Views
- Last post by hyksos
November 1st, 2017, 3:02 pm
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R-process Gold Rush: Neutron Stars Collide
by Braininvat » October 16th, 2017, 12:08 pm
- 0 Comments
- 306 Views
- Last post by Braininvat
October 16th, 2017, 12:08 pm
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Beautiful astronomy photos
by Braininvat » September 22nd, 2017, 9:50 pm
- 3 Comments
- 563 Views
- Last post by mitchellmckain
September 30th, 2017, 2:24 pm
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OSIRIS-REx's Special Dance
by BurtJordaan » September 23rd, 2017, 2:15 am
- 0 Comments
- 297 Views
- Last post by BurtJordaan
September 23rd, 2017, 2:15 am
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Inflation (topic split)
by mitchellmckain » September 2nd, 2017, 2:39 am
- 13 Comments
- 1271 Views
- Last post by hyksos
September 20th, 2017, 12:56 pm
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the data is in : the Big Bang happened.
by hyksos » September 10th, 2017, 8:50 am
- 5 Comments
- 644 Views
- Last post by hyksos
September 16th, 2017, 8:08 am
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nuclear cosmochronometry
by hyksos » September 16th, 2017, 7:57 am
- 0 Comments
- 285 Views
- Last post by hyksos
September 16th, 2017, 7:57 am
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the White Dwarf clock
by hyksos » September 2nd, 2017, 10:02 am
- 3 Comments
- 518 Views
- Last post by hyksos
September 10th, 2017, 8:41 am
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the mystery of Fast Radio Bursts
by hyksos » September 2nd, 2017, 10:17 am
- 3 Comments
- 481 Views
- Last post by Braininvat
September 3rd, 2017, 2:35 pm
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Aug 2017 Eclipse
by zetreque » July 25th, 2017, 1:05 am
- 26 Comments
- 2421 Views
- Last post by mitchellmckain
August 27th, 2017, 4:52 pm
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Cosmology and its problems
by hyksos » August 17th, 2017, 9:57 pm
- 16 Comments
- 1126 Views
- Last post by hyksos
August 23rd, 2017, 2:53 pm
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Total Solar Eclipse 21-Aug-2017 (USA)
by Darby » August 22nd, 2015, 3:36 am
- 2 Comments
- 854 Views
- Last post by Braininvat
August 18th, 2017, 6:37 pm
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Lunar eclipses as the moon gets further away
by caters » August 13th, 2017, 12:44 pm
- 0 Comments
- 294 Views
- Last post by caters
August 13th, 2017, 12:44 pm
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Spotting the International Space Station
by vivian maxine » August 5th, 2014, 10:06 am
- 61 Comments
- 14690 Views
- Last post by Watson
July 25th, 2017, 8:19 pm
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Juno Mission
by Watson » July 12th, 2017, 10:19 am
- 1 Comments
- 622 Views
- Last post by Watson
July 14th, 2017, 4:13 pm
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A Possible Model for Multiverse?
by Alan McDougall » June 18th, 2017, 9:42 pm
- 4 Comments
- 809 Views
- Last post by Serpent
June 22nd, 2017, 12:54 am
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Comparing the movement of beings neutron star/Earth?
by Alan McDougall » June 19th, 2017, 4:57 am
- 0 Comments
- 344 Views
- Last post by Alan McDougall
June 19th, 2017, 4:57 am
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What would happen if an object collided with earth at 99.99c
by Alan McDougall » June 18th, 2017, 10:51 am
- 9 Comments
- 813 Views
- Last post by Alan McDougall
June 18th, 2017, 10:50 pm
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Have we been visited or are being visitors by Aliens UFO
by Alan McDougall » June 14th, 2017, 11:04 am
- 6 Comments
- 1095 Views
- Last post by Dave_Oblad
June 18th, 2017, 8:43 am
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Lets reinstate Pluto as the ninth planet (Honory)
by Alan McDougall » May 14th, 2017, 12:35 pm
- 8 Comments
- 1170 Views
- Last post by mitchellmckain
June 16th, 2017, 2:07 am
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The "One Fundamental Particle' Universe.
by Alan McDougall » June 15th, 2017, 7:35 am
- 5 Comments
- 676 Views
- Last post by Alan McDougall
June 15th, 2017, 12:30 pm
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Poincare recurrence question
by curiousminds » June 8th, 2017, 5:09 pm
- 0 Comments
- 408 Views
- Last post by curiousminds
June 8th, 2017, 5:09 pm
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Here comes the sun -- NASA probe to skim corona
by Braininvat » June 1st, 2017, 10:25 am
- 1 Comments
- 500 Views
- Last post by Braininvat
June 2nd, 2017, 12:00 pm
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Universe expands and contracts
by vivian maxine » May 16th, 2017, 7:14 am
- 0 Comments
- 448 Views
- Last post by vivian maxine
May 16th, 2017, 7:14 am
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Early universe questions, a merger of threads
by Alan McDougall » May 13th, 2017, 10:16 am
- 10 Comments
- 1019 Views
- Last post by Alan McDougall
May 13th, 2017, 11:03 pm
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Which Way is Andromeda going?
by vivian maxine » May 7th, 2017, 6:09 am
- 15 Comments
- 1177 Views
- Last post by vivian maxine
May 9th, 2017, 11:30 am
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The ideal replacement to big bang model by the gradualistic
by coucouxiao » May 6th, 2017, 7:40 am
- 0 Comments
- 398 Views
- Last post by coucouxiao
May 6th, 2017, 7:40 am
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Fast Radio Bursts the work of Extraterrestrial Intelligence?
by Dudley » April 3rd, 2017, 10:49 am
- 4 Comments
- 838 Views
- Last post by Dudley
May 2nd, 2017, 8:19 pm
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Faster than light (superluminal)
by zetreque » May 2nd, 2017, 3:28 pm
- 1 Comments
- 440 Views
- Last post by BurtJordaan
May 2nd, 2017, 4:23 pm
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Observatory News (Various)
by Darby » March 11th, 2015, 10:20 pm
- 62 Comments
- 24288 Views
- Last post by vivian maxine
April 20th, 2017, 11:25 am
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Which topics should a beginner start?
by britt_1a » March 16th, 2017, 5:38 pm
- 6 Comments
- 1135 Views
- Last post by britt_1a
April 9th, 2017, 11:46 pm
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New Attractor, New Repeller
by BurtJordaan » March 14th, 2017, 2:51 am
- 12 Comments
- 1615 Views
- Last post by BurtJordaan
March 30th, 2017, 2:51 am
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Satellites crashing?
by SciameriKen » February 15th, 2017, 10:51 am
- 4 Comments
- 811 Views
- Last post by zetreque
February 16th, 2017, 6:15 pm
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Our New Supercluster Home
by BurtJordaan » February 12th, 2017, 5:08 am
- 1 Comments
- 709 Views
- Last post by dandelion
February 12th, 2017, 10:29 am
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The Cosmic Teardrop
by BurtJordaan » January 4th, 2017, 4:05 am
- 7 Comments
- 2004 Views
- Last post by Faradave
January 9th, 2017, 7:04 pm
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