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03/13/2013
8:42 PM
Paper Planes
by
Kris
Last post:
03/23/2013
11:27 AM
by
English Rose
36
1468
10/13/2006
2:41 AM
Astronaut Challenge
by
Jorrie
Last post:
07/29/2008
9:46 AM
by
Kaboom
36
464
01/06/2017
11:13 AM
Aircraft Realtime Emergency Options
by
raynerpitt
Last post:
11/15/2018
4:17 PM
by
truth is not a compromise
35
456
04/21/2016
11:52 PM
Earth Axis on the Move?
by
jdretired
Last post:
05/02/2016
8:19 AM
by
James Stewart
35
646
06/15/2015
1:01 PM
Who Would Have Thought a Comet Would Look Like This?
by
energyconversion
Last post:
06/19/2015
9:32 AM
by
adreasler
35
646
10/16/2014
4:24 PM
Go Skunkworks!!!!!!
by
James Stewart
Last post:
10/22/2014
1:54 PM
by
James Stewart
35
749
01/28/2011
7:47 AM
Remembering Space Shuttle Challenger
by
BruceFlorida
Last post:
02/04/2011
7:08 PM
by
tcmtech
35
432
02/25/2009
9:54 AM
Galaxy May Be "Full of Earths", Alien Life
by
Bayes
Last post:
03/02/2009
7:19 PM
by
Epke
35
2001
02/01/2009
8:52 PM
Best Standard Airplane Engines?
by
Transcendian
Last post:
02/06/2009
6:30 PM
by
Bricktop
35
486
09/02/2021
9:31 AM
Space Debris Removal
by
Rixter
Last post:
09/29/2021
11:08 PM
by
Gavilan
34
314
09/25/2016
11:55 AM
Maybe Space X Encountered a Garbage Bag Full of Hydrogen?
by
JE in Chicago
Last post:
09/27/2016
12:30 PM
by
SolarEagle
34
540
03/01/2016
8:17 PM
Air Pressure Reducer
by
lhoefken
Last post:
03/07/2016
11:26 AM
by
Codemaster
34
463
09/11/2012
3:32 PM
The Physics of Water on Mars
by
Out of Box Experience
Last post:
09/24/2012
2:07 AM
by
jmmyadam
34
606
08/27/2009
5:13 AM
Full Moon?
by
lyn
Last post:
08/30/2009
10:28 AM
by
Del the cat
34
130
08/17/2009
5:13 PM
High Altitude Propellor Design Differences
by
NSS
Last post:
03/02/2015
12:21 PM
by
pauldavidson
33
925
11/02/2014
6:52 AM
Dangerous Asteroid Rapidly Approaching Earth?
by
spacevudo
Last post:
11/11/2014
12:41 AM
by
Gavilan
33
1038
03/22/2014
8:17 PM
$6,000,000.00 Up for Grabs
by
SolarEagle
Last post:
04/04/2014
9:50 AM
by
netmaker
32
481
02/23/2013
10:38 AM
Bringing ICBM to It's Silo
by Anonymous Poster
Last post:
02/28/2013
2:10 PM
by
truth is not a compromise
32
243
08/24/2008
1:52 AM
Best Design for Airplane Structures
by
tcorn137
Last post:
08/27/2008
10:54 PM
by
Blink
32
493
03/09/2007
2:42 AM
What If There Were No Moon?
by
James P. Hollen
Last post:
03/14/2007
8:49 AM
by
ichbindan
32
547
07/13/2014
12:04 PM
Space Rockets
by
ronseto
Last post:
10/12/2019
10:20 PM
by
Dragon113
31
825
07/03/2015
3:42 PM
Pilots "Starting" Younger These Days
by
lyn
Last post:
07/09/2015
5:31 AM
by
phoenix911
31
482
09/18/2013
10:10 AM
Cryogenic Engine for Aircrafts
by Anonymous Poster
Last post:
09/23/2013
9:39 AM
by
ronclarke
31
370
07/24/2012
8:34 AM
Trajectory of Earth Round the Sun!
by
xyz
Last post:
07/30/2012
3:36 PM
by
passingtongreen
31
447
06/16/2010
11:22 PM
Protecting Modern Auto's From Sunspot Damage
by
Hamish
Last post:
06/21/2010
12:09 PM
by
bob c
31
280
03/12/2010
12:33 AM
Surface Temperature of the Sun
by
Johannescnc
Last post:
03/22/2010
1:37 PM
by
NiCrMoNoMore
31
650
10/13/2009
11:50 AM
Space Habitat
by
Kaboom
Last post:
10/27/2009
10:49 AM
by
Kaboom
31
291
11/16/2017
4:41 PM
MHD in Air
by
James Stewart
Last post:
12/04/2017
3:53 PM
by
James Stewart
30
364
11/23/2015
10:04 PM
What is This.....Exactly?
by
Fredski
Last post:
12/29/2015
5:20 PM
by
Casper71
30
940
11/14/2014
9:41 AM
Would You Fire Up the Drill?
by
Fredski
Last post:
11/16/2014
4:52 AM
by
Kris
30
501
08/04/2014
4:48 AM
Thrust Without Fuel
by
energyconversion
Last post:
08/10/2014
7:45 PM
by
Rixter
30
673
02/28/2014
12:42 PM
Miracle Landing
by
Doorman
Last post:
03/02/2014
2:02 AM
by
Andy Germany
30
647
10/09/2010
5:26 PM
Strange Space Ships
by Anonymous Poster
Last post:
10/11/2010
10:42 AM
by
JBTardis
30
300
09/30/2006
4:00 PM
Lies, More Lies, and Arithmetic
by
Blink
Last post:
05/11/2009
5:18 PM
by
RGO
30
868
12/21/2007
3:06 PM
Hubble's triumph!
by
case491
Last post:
01/01/2008
1:51 PM
by
Sparkstation
30
291
10/03/2016
12:53 AM
Martian Explorer Radiation Protection
by
SolarEagle
Last post:
10/07/2016
1:26 AM
by
truth is not a compromise
29
688
09/20/2014
1:27 PM
Charging a Supercap
by
mike k
Last post:
09/23/2014
8:43 PM
by
europium mkII
29
359
03/26/2012
2:22 PM
Conceptual Design of New Aero-Vehicle
by
adiptadatta
Last post:
03/28/2012
9:13 PM
by
chrisg288
29
1036
06/10/2010
4:12 PM
The Future of NASA!!!
by
nivek2421
Last post:
06/15/2010
9:23 AM
by
Transcendian
29
350
01/31/2019
2:01 AM
Aircraft
by
Ashish1101
Last post:
05/21/2020
9:06 AM
by
not so smart
28
1156
03/30/2016
11:54 PM
Corporate Aircraft
by
machia0705
Last post:
04/03/2016
9:37 AM
by
bullardrr
28
431
04/24/2015
4:13 PM
When It Just Isn't Your Day to Die
by
lyn
Last post:
05/21/2015
11:12 AM
by
lyn
28
1356
12/20/2011
9:33 AM
Little H2 and He on the Earth Compared to Other Planets
by
Clarke Shugart
Last post:
12/30/2011
9:41 AM
by Anonymous Poster
28
261
08/14/2007
1:57 PM
War versus Space Exploration
by
-A-
Last post:
08/16/2007
5:41 PM
by
traditional
28
357
10/20/2019
10:03 PM
The Helical Engine: Will It Work?
by
Rixter
Last post:
02/15/2020
9:13 AM
by
HiTekRedNek
27
963
06/05/2014
7:27 AM
Oxygen Amplification
by
stinky00
Last post:
07/01/2014
8:34 PM
by
stinky00
27
503
03/16/2010
11:30 PM
Technical Writing Resources
by
wingman1985
Last post:
04/09/2010
8:03 AM
by
gsuhas
27
278
04/01/2010
5:43 PM
How Do We Go About Exploring New Planets?
by
kevinm
Last post:
04/05/2010
10:01 AM
by
Lynn.Wallace
27
362
08/15/2008
7:51 PM
Airplane Wings: Optimal Radius Curve
by
RATSSTAR
Last post:
02/05/2009
8:24 PM
by Anonymous Poster
27
912
12/30/2016
1:46 PM
Is it Possible to Make a Button Head Machine Screw a Certain Size/Gram Weight?
by
buffalocrossing
Last post:
05/19/2019
9:39 PM
by
buffalocrossing
26
493
06/01/2017
1:34 PM
Stratolaunch Unveiled
by
redfred
Last post:
06/13/2017
4:13 PM
by
dj95401
26
499
11/18/2015
12:40 PM
NASA and Space Program
by
nivek2421
Last post:
11/19/2015
7:17 PM
by
lyn
26
559
12/10/2008
1:52 AM
Hubble Telescope Finds Carbon Dioxide on Distant Planet
by
Bayes
Last post:
12/12/2008
1:54 PM
by
Tinker65
26
267
09/20/2006
12:41 AM
Knowledge
by
Erich
Last post:
09/22/2006
9:59 PM
by Anonymous Poster
26
537
11/12/2020
8:08 AM
Space Qualified Thread Lock
by
Nigh
Last post:
11/21/2020
7:14 PM
by
Yuval
25
467
01/02/2017
3:46 PM
Electrically Powered Aircraft - Again
by
energyconversion
Last post:
01/17/2017
11:33 PM
by
truth is not a compromise
25
438
01/21/2016
1:47 PM
Can Plutonium 238 Power our Space Exploration of the Future?
by
joeymac
Last post:
01/23/2016
6:23 PM
by
Rixter
25
468
09/24/2009
9:37 AM
First Telescope for an 11-Year Old
by
English Rose
Last post:
10/19/2009
4:34 AM
by
English Rose
25
6931
11/20/2006
1:19 PM
Colliding Planets
by
horace40
Last post:
12/06/2006
11:58 PM
by Anonymous Poster
25
381
10/16/2017
4:05 PM
Water or Land?
by
Fredski
Last post:
10/18/2017
10:46 AM
by
James Stewart
24
402
07/13/2017
12:39 PM
Reentry Options
by
SSCpal
Last post:
07/16/2017
6:01 PM
by
redfred
24
564
12/17/2016
10:19 AM
Huge Black Hole May Have Turned Star into 'Spaghetti'
by
Rixter
Last post:
01/11/2017
12:37 PM
by
James Stewart
24
470
04/21/2016
10:44 AM
New Jet Hoverboard Video
by
James Stewart
Last post:
04/22/2016
9:10 AM
by
James Stewart
24
791
01/26/2016
2:37 AM
A 10 Pilot Landed Missile Hit Plane Safely
by
Andy Germany
Last post:
02/02/2016
10:59 AM
by
phoenix911
24
766
12/07/2015
9:09 PM
Man Noticed This Abandoned Hangar But What's Inside Caught Him By Surprise
by
AussieBob
Last post:
01/28/2016
1:13 AM
by
Casper71
24
1213
09/29/2015
7:41 AM
Ultrasonic Antenna
by
tom@windoor
Last post:
10/05/2015
2:51 PM
by
tom@windoor
24
834
01/30/2015
12:10 PM
Improving the Data for Climate Models
by
Fredski
Last post:
02/03/2015
9:03 AM
by
redfred
24
447
11/29/2014
11:13 AM
Probability on Finding a Habitable Planet and Other Life in the Universe
by
Noudge79
Last post:
12/08/2014
11:44 AM
by
RufusVS
24
435
02/26/2013
8:47 AM
Refuelling of Aircrafts
by Anonymous Poster
Last post:
02/28/2013
3:01 PM
by
James Stewart
24
607
09/26/2011
8:08 AM
Was it a Meteorite or NASA´s Satellite Debris?
by
r&ddoc
Last post:
09/28/2011
5:22 PM
by
cuba_pete
24
246
07/21/2009
7:44 AM
Black Sunrise Over India
by
Duckinthepond
Last post:
07/27/2009
9:07 AM
by
Duckinthepond
24
373
07/10/2007
10:45 AM
The next small step for a man?
by
PWSlack
Last post:
07/19/2007
11:27 AM
by
texlex
24
196
10/13/2017
1:33 AM
For Elon Musk =) Inverted Magnetic Gravity Well for a Controlled Landing
by
alex12
Last post:
10/16/2017
8:51 AM
by
James Stewart
23
460
02/10/2017
3:42 PM
New Impact Crater on Mars
by
Andrew Westman
Last post:
02/11/2017
4:19 PM
by Anonymous Poster
23
480
09/28/2015
4:20 AM
Boeing Is Doing What?
by
Gavilan
Last post:
10/06/2015
10:53 PM
by
Munster
23
778
06/29/2015
8:58 PM
Should We Use Russian Rockets for Launches Now?
by
Fredski
Last post:
07/02/2015
8:01 AM
by
Fredski
23
496
08/25/2012
3:39 PM
Neil Armstrong Dead at Age 82
by
Anonymous Hero
Last post:
09/05/2012
7:44 PM
by
Kris
23
443
01/27/2010
11:00 AM
New Proposed NASA Budget
by
Anonymous Hero
Last post:
02/01/2010
5:24 PM
by
phoenix911
23
320
11/19/2006
12:50 PM
Dark Energy Battles Dark Matter
by
Jorrie
Last post:
11/03/2008
12:26 AM
by
Jorrie
23
1833
02/16/2008
12:51 PM
Pre Spin Airplane Wheels
by
dellori3
Last post:
08/22/2008
9:24 AM
by
weirdwalt
23
1112
05/05/2018
3:10 PM
Reminiscing About The Warthog
by
Doorman
Last post:
10/31/2018
3:49 PM
by
munch
22
728
02/20/2017
6:28 PM
Helium vs Hot Air Lift
by
Declex Hill
Last post:
02/22/2017
1:02 PM
by
phph001
22
1067
05/23/2016
9:45 AM
Orion To Make "Unscrewed" Flight - A First
by
James Stewart
Last post:
05/25/2016
11:36 AM
by
James Stewart
22
549
04/01/2016
9:41 AM
Ion Plasma Wing Flaps
by
James Stewart
Last post:
04/04/2016
2:54 PM
by
lyn
22
434
07/15/2015
1:20 PM
Don't You Just Hate That
by
Fredski
Last post:
07/16/2015
11:31 AM
by
Original_Macgyver
22
485
04/17/2015
9:02 AM
It Really Wasn't Close
by
Fredski
Last post:
04/22/2015
9:47 PM
by
jack of all trades
22
464
12/05/2014
12:54 PM
How did Photons Escape Relativistic Effect of Dilation?
by
Noudge79
Last post:
12/09/2014
11:02 AM
by
adreasler
22
405
12/01/2014
10:12 AM
See That Comet
by
Fredski
Last post:
12/03/2014
10:10 AM
by
James Stewart
22
428
02/12/2014
11:53 AM
Helicopters
by
sathishvh
Last post:
02/14/2014
2:29 PM
by
Nigh
22
360
12/10/2013
7:49 PM
Unknown Object In Desert
by
spaceracer
Last post:
12/27/2013
11:23 AM
by
Drew K
22
1176
09/15/2013
4:37 PM
A Turboprop Question
by
ronseto
Last post:
09/22/2013
9:26 PM
by
fixitorelse
22
384
03/18/2012
2:22 PM
Proof That Pi Equals 4!
by
Steve Urich
Last post:
03/20/2012
2:15 PM
by
SolarEagle
22
499
09/27/2010
5:50 PM
North American Manufacturers of Stirling Engines
by
elnav
Last post:
09/29/2010
3:17 PM
by
Smeaton
22
697
12/03/2009
10:19 AM
Improved Aircraft Landings
by
ronseto
Last post:
01/13/2010
3:32 PM
by
chrisg288
22
564
10/18/2006
2:50 AM
Check Halley's Comet this Weekend!
by
Jorrie
Last post:
11/25/2009
12:14 AM
by
masu
22
2126
12/31/2007
7:09 AM
Identical Orbit
by
James P. Hollen
Last post:
01/03/2008
3:29 PM
by
EnviroMan
22
355
03/05/2016
8:55 AM
Will Elon Ever Accept Defeat?
by
Fredski
Last post:
03/07/2016
9:48 AM
by
rashavarek
21
430
01/17/2016
6:22 PM
Crash and Burn
by Anonymous Poster
Last post:
01/20/2016
3:01 AM
by
Mr. small
21
459
11/06/2013
9:37 PM
Did We Bring Life To Mars?
by
IdeaSmith
Last post:
10/12/2015
10:31 AM
by
James Stewart
21
415
02/05/2015
2:25 AM
Pipe for use with Super Heated Steam at 400 to 500C
by
regsoft
Last post:
02/12/2015
9:14 AM
by
James Stewart
21
394
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