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NASA's SLS rocket. Questions about it by RichA[_6_]
The SLS is the next giant rocket that will be used for long range manned spaceflight, or the moon as a target. But it's way over budget (how much is really...
(Multi-page thread 1 2 3)
Today 12:19 AM
by Chris L Peterson Go to last post
26 170
Loon runs telescope sales site for negative lens telescopes to "see"anti-matter galaxies and aliens!! by RichA[_6_]
Wow! http://www.thunder-energies.com/index.php/ct-menu-item-9 The guy who runs it, someone had a run-in with...
Yesterday 10:06 PM
by [email protected] Go to last post
3 446
Yesterday 09:44 PM
by [email protected] Go to last post
0 1
Does this mean you could land on Uranus or Neptune? by RichA[_6_]
They were re-classified as "ice-giants" instead of "gas-giants" like Saturn and Jupiter. Jupiter and Saturn have atmospheres that become virtually liquid the...
Yesterday 08:20 PM
by corvastro Go to last post
8 376
Mercury in direct motion by Gerald Kelleher
https://sohowww.nascom.nasa.gov/data/LATEST/current_c3.gif The stars change their position from left to right and parallel to the orbital plane so we are...
Yesterday 08:14 PM
by Gerald Kelleher Go to last post
4 1,127
what (if anything) "defines" an orbit as being "cometary" vs "asteroidal"? by [email protected]
Is there some combination of orbital element values that establishes the orbit of a minor solar system body as being "cometary" as opposed to "asteroidal"?...
Yesterday 08:13 PM
by corvastro Go to last post
3 366
earth tilt to 45 deg? by StarDust
What would happen if the Earth's tilt would shift to 45 deg suddenly or in a short period of time? Would we survive?
(Multi-page thread 1 2 3 ... Last Page)
Yesterday 07:34 PM
by corvastro Go to last post
41 439
Astronomy Quiz by [email protected]
On Monday, December 24, 2018 at 10:29:45 PM UTC-8, StarDust wrote: https://www.youtube.com/watch?v=zOw8aiyMUAU Hehehe!!!! There are "Nein"...
Yesterday 07:00 PM
by [email protected] Go to last post
0 21
NASA engineer looking for Instagram hits FAKED some of the"glitter bomb" video by corvastro
On Friday, December 21, 2018 at 6:36:42 PM UTC-8, RichA wrote: Well, at least he didn't do a cross-country trip wearing a diaper in hopes of killing...
Yesterday 06:34 PM
by corvastro Go to last post
0 23
Let's Photograph Comet 46P Wirtanen by StarDust
https://www.youtube.com/watch?v=ycoIAH7uuaI Interesting! It's overcast here in the Bay Area, so no comet for me the next few days!
(Multi-page thread 1 2 3 ... Last Page)
Yesterday 04:17 PM
by corvastro Go to last post
73 592
"Steam powered" spacecraft by corvastro
On Monday, January 14, 2019 at 7:35:05 AM UTC-8, Chris L Peterson wrote: On Sun, 13 Jan 2019 15:40:26 -0800 (PST), RichA wrote: ...
Yesterday 03:13 PM
by Chris L Peterson Go to last post
1 62
Alt Alt Direct Drive Telescope Mount by StarDust
https://www.youtube.com/watch?v=cNRsbwZ83rY WOW! What a cool design for sat tracking? Not portable though?
Yesterday 03:12 PM
by corvastro Go to last post
3 596
White Swan DD 200 - the most advanced amateur astronomical equatorial mount by StarDust
https://www.youtube.com/watch?v=wfRDO1zvKZc WOW! I bet, this thing can track down hundreds of objects one night, incl. satellites too?
(Multi-page thread 1 2)
Yesterday 01:18 PM
by [email protected] Go to last post
13 680
Referencing our planet to the Sun by Gerald Kelleher
Perhaps the one issue which distinguishes the astronomy I practice from celestial sphere enthusiasts is that I incorporate the inner solar system and the...
(Multi-page thread 1 2)
Yesterday 12:51 PM
by Gerald Kelleher Go to last post
10 1,015
Belt mode noise comparison vs. gear by StarDust
https://www.youtube.com/watch?v=EE0FK0KDROw I think, I can used this belt drive? My Vixen GP/D EQ gears gets very noisy too in the silence at night!
Yesterday 11:44 AM
by corvastro Go to last post
4 801
All you need is $100,000 worth of Astro-Physics gear and SBIG/FLI by RichA[_6_]
(Multi-page thread 1 2)
Yesterday 10:35 AM
by corvastro Go to last post
12 940
Eclipse Photo Found Online... by [email protected]
On Friday, January 25, 2019 at 1:06:24 PM UTC-8, Gerald Kelleher wrote: Well, run for cover as the usual nuisance shows up to remind you how it feels to be...
Yesterday 10:07 AM
by Gerald Kelleher Go to last post
1 84
The comets and the inner solar system by Gerald Kelleher
https://www.youtube.com/watch?v=2qtyS38Zkzs http://www.aerith.net/comet/weekly/20100710n.html Another remarkable feature is the brightening of comets as they...
Yesterday 09:48 AM
by Gerald Kelleher Go to last post
7 403
A new start by Gerald Kelleher
When it is sunset it is also star rise and when is star set is also sunrise with just that short period of dawn and twilight when it is neither. As a package...
(Multi-page thread 1 2 3)
Yesterday 08:58 AM
by Quadibloc Go to last post
27 750
Will Sirius Disappear? by palsing[_2_]
Yesterday 08:38 AM
by [email protected] Go to last post
3 110
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