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by William Roeder
Tue Feb 09, 2010 3:23 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Night Launch of the Space Shuttle... (2010 Feb 09)
Replies: 16
Views: 6158

Re: APOD: Night Launch of the Space Shuttle... (2010 Feb 09)

isn't (very, very) most of these impressive clouds made out of steam (H2O) used do cool down the rockets before take off? If you look at the moment of launch you'll see two clouds, one white, one dirty white in the opposite direction. The white one is the steam, the other is from the solid rocket b...
by William Roeder
Sun Jan 17, 2010 5:46 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Atlantis to Orbit (2010 Jan 17)
Replies: 14
Views: 2787

Re: Atlantis to Orbit (2010 Jan 17)

No species other than human can even comprehend what is going on, nor could any human just a millennium ago 2 Kings 2:11 And it came to pass, as they still went on, and talked, that, behold, there appeared a chariot of fire, and horses of fire, and parted them both asunder; and Elijah went up by a ...
by William Roeder
Sun Jun 07, 2009 2:58 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Distant Galaxies
Replies: 24
Views: 2740

Re: Distant Galaxies

How long would it take assuming a 1 g acceleration to halfway, and 1 g deceleration for the remainder? My relativity is rusty and my book is in a box, but I think 1 g acceleration would give you less return in velocity as you got closer to the speed of light. I actually did the calculation when my ...
by William Roeder
Wed Sep 17, 2008 8:56 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Could Dark Matter Possibly Be . . .
Replies: 315
Views: 32172

Re: Could Dark Matter Possibly Be . . .

Could dark matter possibly be clouds of extremely small black holes? Atomic particle sized black holes would not interact with normal matter except for gravity. Furthermore, the cloud should be invisible. Why do you say this? Black holes interact normally with matter: they can have an electric char...
by William Roeder
Wed Aug 20, 2008 1:16 am
Forum: Open Space: Discuss Anything
Topic: global warming
Replies: 86
Views: 8755

1. Are all of these uses vital? You're saying conservation is not even an option here? We have to have the plastic wrappers we quickly throw in the landfills? You're suggesting that because we are currently dependent on such products we must be in the foreseeable future? Escentially, yes. From Mabe...
by William Roeder
Tue Aug 19, 2008 8:27 pm
Forum: Open Space: Discuss Anything
Topic: global warming
Replies: 86
Views: 8755

effort still must be made to reduce our dependence on fossil fuels The problem is that there is no substitute for oil. The US uses five million barrels of oil a day for non-energy uses. Thats almost half. We've been playing with wind and solar for 30 years. They are still more than twice as expensi...
by William Roeder
Tue Aug 19, 2008 1:25 pm
Forum: Open Space: Discuss Anything
Topic: global warming
Replies: 86
Views: 8755

There is a definite component that points directly to mans alteration of the earth. Which can be determined in the Fact that over the course of the last 100 years, worldwide average temps have risen by .08dC to 1.2dC but urban areas (where man & polution sources are located) are up 2dC to 2.8dC...
by William Roeder
Mon Aug 18, 2008 12:41 pm
Forum: Open Space: Discuss Anything
Topic: global warming
Replies: 86
Views: 8755

If you eliminate both Downward anomolies (spikes) and upward spikes over the last 200 years, there is a definite warming trend and if it is to a greater extent in urbanized areas then there is a human component that must be included and accepted. I found this chart interesting. It shows temperature...
by William Roeder
Sun Aug 17, 2008 3:05 pm
Forum: Open Space: Discuss Anything
Topic: global warming
Replies: 86
Views: 8755

Re: Global Warming

Case wrote:For all I know they studied "what propaganda to spread to keep their current lifestyle in a changing worldwide climate."
Isn't propaganda exactly what your saying.
Case wrote:Man's contribution to changes on the planet is colossal
by William Roeder
Sun Aug 17, 2008 2:11 pm
Forum: Open Space: Discuss Anything
Topic: global warming
Replies: 86
Views: 8755

Re: Global Warming

Case wrote:Man's contribution to changes on the planet is colossal,
Zero evidence.
30,000 Climit scientists signed a report agreeing 100% with that.
Man's contribution is trivial compaired to natural factors.
Global Warming 'Consensus' Shattering
by William Roeder
Sun Aug 17, 2008 1:31 pm
Forum: Open Space: Discuss Anything
Topic: global warming
Replies: 86
Views: 8755

Re: Global Warming

If this is true, one would have to attribute global warming to cyclical solar fluctuations. http://en.wikipedia.org/wiki/Little_ice_age There is a case that can be made for about half of the current [0.8º C] global warming from 1850 to the present being attributable to a recovery of from "The ...
by William Roeder
Mon May 19, 2008 1:31 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: On the Origin of Gold; Golden Globe Award (APOD 18 May 2008)
Replies: 39
Views: 17065

apodman wrote:According to a Jeopardy question a couple of years ago, all the gold ever extracted from the earth adds up to less than a cubic mile.
Actually it would measure 25 meters per side.
by William Roeder
Sun Apr 13, 2008 1:50 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Silica Symphony, Mars White Rock Fingers (APOD 07 Apr 08)
Replies: 12
Views: 9917

Re: shiney stuff with fingers

Sputnick wrote:Like a prehistoric mamoth instantly frozen with buttercups in its mouth?
It didn't instantly freeze, it fell though a partially frozen lake and drowned. The buttercups weren't in the mouth, they were in the stomach, partially digested. An urban legend.
by William Roeder
Wed Mar 26, 2008 2:49 am
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: washington nasa observe cosmic explosion GammaRB (28Mar2008)
Replies: 20
Views: 9893

Wat U talk'n 'bout Willas?
by William Roeder
Mon Feb 04, 2008 9:00 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Asteroid TU24 smoothed image. 1500 megaton (APOD 30 Jan2008)
Replies: 29
Views: 11714

Arramon wrote: Those Chinese better be sending images of the darkside of the Moon when its in the light of the Sun so we can all see! =)
Why would the darkside ever be lit? You meant farside, there is no darkside except in the force :roll:
by William Roeder
Wed Jan 30, 2008 1:25 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Asteroid TU24 smoothed image. 1500 megaton (APOD 30 Jan2008)
Replies: 29
Views: 11714

Re: 1500 megaton asteroid

neufer wrote:(Tunguska sized) 15 (TNT) megaton
There was a newspaper article today, 1/30/08, about new supercomputer models putting Tunguska at 3-5 megatons.
by William Roeder
Fri Nov 16, 2007 9:12 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Most disappointing APOD ever (16 Nov 2007)
Replies: 10
Views: 3769

(SNIP) BTW I wonder what will happen in the future to the geocynchonus orbital space. I just learned that there are only about 200 slots left out of approx. 3000. Highest bidder? Star wars? I think they will go to an even higher orbit much like electrons orbit in shells or Saturnian Rings. Higher o...
by William Roeder
Tue Oct 09, 2007 2:52 pm
Forum: Starship Asterisk: Handbook
Topic: New! APOD software
Replies: 125
Views: 278407

I don't see the problem on XP with IE 7.0.5730.11 or Firefox 2.0.0.7
Are you up to date with Tools -> Windows Update
by William Roeder
Mon Sep 17, 2007 4:44 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Space walk - forbidden directions? (APOD 16 Sep 2007)
Replies: 22
Views: 8447

Still a great view of course!
That must be completely mind blowing.

And they get paid to do it too. Cool
Listen to them complain when the weather's bad and they have to stay up an extra day :wink: [/quote]
by William Roeder
Sun Sep 16, 2007 1:51 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Space walk - forbidden directions? (APOD 16 Sep 2007)
Replies: 22
Views: 8447

If he moved straight up, his orbit would be higher than the Shuttle, an orbit that requires a lesser orbital speed to maintain, while he was travelling at the same speed as the Shuttle. So he would be travelling faster than his orbit required and would spiral outwards, away from the Shuttle. Vice v...
by William Roeder
Sun Sep 09, 2007 2:55 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Saturn's Tethys and Ice Balls?!? (APOD 09 Sep 2007)
Replies: 13
Views: 5985

And for an ignorant one, 'FOCLMAO'?
http://acronyms.thefreedictionary.com/FOCLMAO
FOCLMAO Falling Off Chair Laughing My Ass Off
by William Roeder
Thu Sep 06, 2007 2:11 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: hubble
Replies: 65
Views: 15615

12.7 billion years ago, when the light started it's journey to us, the quazar was 12.7 billion lightyears away.
by William Roeder
Mon Sep 03, 2007 5:25 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: A Sonic Boom (APOD 19 August 2007)
Replies: 24
Views: 8157

The shock wave move away from the aircraft.
When the Concord went supersonic, the only thing to tell the passengers was the digital meter on the bulkhead.
by William Roeder
Fri Aug 24, 2007 1:54 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: Southern Moonscape, lunar craters (APOD 23 Aug 2007)
Replies: 36
Views: 11915

Re: APOD 23rd August 2007 - Lunar Craters

http://antwrp.gsfc.nasa.gov/apod/ap070823.html Is it just me, or does anyone else have real problems resolving these kind of images as craters and not bumps? It takes me a good few minutes of squinting and staring and looking at other details before I can perceive the craters as concave. :shock: Do...
by William Roeder
Thu Jul 19, 2007 7:47 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: At That Distance; red and blue shift (APOD 12 July 2007)
Replies: 16
Views: 5926

Re: More light - less noise

I am curious how a prism would be used to measure individual star motion in a field of so many star lights. Stars are red or blue because the star's temperature makes the majority of the light in that band. Our star (the sun) is yellow. All stars emit all colors. The spectral absorption lines are i...

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