Search found 304 matches

by stephen63
Wed Aug 21, 2013 2:00 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Perseid Meteors Over China (2013 Aug 21)
Replies: 13
Views: 2763

Re: APOD: Perseid Meteors Over China (2013 Aug 21)

Let's see, over four hours the earth rotates by sixty degrees; therefore, each of the 68 frames that were combined was rotated as needed to compensate for earth's rotation, so that the patterns of stars from different frames overlapped correctly. That leaves a puzzle: Why is the silhouette of a tre...
by stephen63
Thu Aug 15, 2013 7:26 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Radiation & Habitable-zone Planets
Replies: 37
Views: 3042

Re: Radiation & Habitable-zone Planets

mjimih wrote: Don't most rocky planets around our size or larger, produce "a" magnetic field bc of their hot liquid cores? How important is it that a magnetic field be present for surface life?
Well, Mars is a good example.
by stephen63
Wed Aug 14, 2013 5:47 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Radiation & Habitable-zone Planets
Replies: 37
Views: 3042

Re: Radiation & Habitable-zone Planets

Given that the periodic table is universal, it doesn't seem to be accidental that life forms on earth are comprised primarily of carbon, hydrogen, oxygen and nitrogen. Here is a link to an interesting book: http://www.thelivingcosmos.com/ Part of the thrust of astrobiology is to examine the nature o...
by stephen63
Tue Aug 13, 2013 5:13 pm
Forum: Open Space: Discuss Anything
Topic: Neanderthal in all
Replies: 10
Views: 901

Re: Neanderthal in all

neufer wrote:
wonderboy wrote:Since this is a Gene. Is there any possibility of this Gene being more prominent in some folk than others. For example, those with monobrows or enhanced brows or both. Those that are freakishly large.
Those SHORT with NO CHIN :?:
Click to play embedded YouTube video.
by stephen63
Mon Aug 12, 2013 3:27 pm
Forum: Open Space: Discuss Anything
Topic: Stream of Stuff
Replies: 780
Views: 387279

Re: Stream of Stuff

Can't sleep. Weird observation I made a while back that I just thought of: When Pat holds my iPad while it is plugged in and charging, if I run my fingers lightly on the skin of his leg, I feel a very delicate tingling, vibration. Pat was dubious about my claim and he tried to do the same except wi...
by stephen63
Mon Aug 12, 2013 1:48 am
Forum: Open Space: Discuss Anything
Topic: Stream of Stuff
Replies: 780
Views: 387279

Re: Stream of Stuff

Can the Spaghetti people form a church and file to be tax-exempt under section 501(c)(3)of the Internal Revenue Code if they really, really, well, sort of believe in the Spaghetti god?
by stephen63
Sun Aug 11, 2013 3:14 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Planetary Nebula Mz3: The Ant Nebula (2010 Apr 25)
Replies: 22
Views: 4331

Re: APOD: Planetary Nebula Mz3: The Ant Nebula (2010 Apr 25)

totalcarpenter wrote:What would happen if a planetoid plowed though the center of the star like a bullet though a water ballon?
Nothing.
by stephen63
Sat Aug 10, 2013 6:49 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Hubble vs. Subaru's Hyper-Suprime Cam
Replies: 21
Views: 11588

Re: Hubble vs. Subaru's Hyper-Suprime Cam

Wouldn't the best test of resolution and limiting magnitude be a comparison of deep field images?

http://www.astro.spbu.ru/staff/resh/Lectures/lec6.pdf
by stephen63
Fri Aug 09, 2013 11:15 pm
Forum: Open Space: Discuss Anything
Topic: Stream of Stuff
Replies: 780
Views: 387279

Re: Isn't it a <bleep> miracle???

And yet, and yet... the hot dogs must have been there from the beginning, in the Big Bang, as an incredibly, unfathomably remote future possibility. Even in the Big Bang, the first ingredients of hot dogs were cooked up. The first ingredients of free dance performances were cooked up too, and mild ...
by stephen63
Fri Aug 09, 2013 10:58 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Hubble vs. Subaru's Hyper-Suprime Cam
Replies: 21
Views: 11588

Re: Hubble vs. Subaru's Hyper-Suprime Cam

This telescope deserves the Tim Allen grunt. thirty meter.jpg "With the signing last week of a "master agreement" for the Thirty Meter Telescope—destined to be the most advanced and powerful optical telescope in the world—the University of California and UCLA moved a step closer to pe...
by stephen63
Fri Aug 09, 2013 7:43 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Hubble vs. Subaru's Hyper-Suprime Cam
Replies: 21
Views: 11588

Re: Hubble vs. Subaru's Hyper-Suprime Cam

geckzilla wrote: I am going to sob quietly into my pillow if the JWST somehow gets canceled or crashes. More space telescopes!
Yay!
JWST-HST-primary-mirrors.jpg
by stephen63
Fri Aug 09, 2013 5:10 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Hubble vs. Subaru's Hyper-Suprime Cam
Replies: 21
Views: 11588

Re: Hubble vs. Subaru's Hyper-Suprime Cam

I did a screen capture of the Hubble images footprint for WFC3 and ACS cameras.
m31 wfc3.jpg
by stephen63
Thu Aug 08, 2013 3:03 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: NGC 3370: A Sharper View (2013 Aug 08)
Replies: 15
Views: 3169

Re: APOD: NGC 3370: A Sharper View (2013 Aug 08)

If you take a close look, you'll see what appear to be H II regions throughout the galaxy that are colored green. I went to the Hubble Legacy Archive and the combined color image has the same green regions. It can't be ionized hydrogen, but what would cause the green structures? I cropped one of the...
by stephen63
Wed Aug 07, 2013 1:27 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2013 August
Replies: 287
Views: 162279

Re: Submissions: 2013 August

The Lobster Claw and the Bubble http://fth.bounceme.net/ Copyright: Fred Herrmann, All rights reserved 2013 https://lh4.googleusercontent.com/-rGaPb01KFoo/UgGA3J49BHI/AAAAAAAAGtE/U5XElzbJylM/w1194-h834-no/Lobster_Bubble+2013.jpg Fred, you may want to scan your website. I use Trend Micro Titanium 20...
by stephen63
Tue Aug 06, 2013 10:31 pm
Forum: Open Space: Discuss Anything
Topic: John Cleese's take on the current state of Europe.
Replies: 8
Views: 755

Re: John Cleese's take on the current state of Europe.

Beyond wrote:How about global-murica? But i was hoping for something a little more..... 'catchy'. :mrgreen:
Neworldisorder?
by stephen63
Tue Aug 06, 2013 5:38 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: In the Vicinity of the Cone Nebula (2013 Aug 06)
Replies: 44
Views: 8426

Re: APOD: In the Vicinity of the Cone Nebula (2013 Aug 06)

This sensor has the greatest Full Well Capacity in the FLI line of cameras. 650,000 e- is a LOT! PL4301 Sensor Specs Sensor: Truesense KAF-4301E Pixels: 2084 x 2084 Pixel Size: 24 μm Full Well Capacity: 650,000 e- Sensor Diagonal: 70.7 mm Video Size (inch): 4.3 Anti Blooming: None Color Options: Mon...
by stephen63
Fri Aug 02, 2013 4:35 pm
Forum: The Communications Center: Breaking Science News
Topic: Comet C/2012 S1 (ISON)
Replies: 57
Views: 11932

Charts for spotting ISON

Link to a website that has some really nice charts for spotting ISON. Just click on the month you want for the charts. The link is set to October.
http://waitingforison.wordpress.com/october-2013/
by stephen63
Fri Aug 02, 2013 1:41 am
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Black Hole = Big Bang = Another Universe
Replies: 22
Views: 15546

Re: Black Hole = Big Bang = Another Universe

Chris Peterson wrote: It may stimulate speculative reasoning, but that is a very different kind of "speculative" than things like alternate universes and other versions of you or me.
I agree. That's why I said the idea was ludicrous.
by stephen63
Fri Aug 02, 2013 1:36 am
Forum: The Observation Deck: Latest Sky Photography
Topic: Submissions: 2013 August
Replies: 287
Views: 162279

Re: Submissions: 2013 August

SSTGBSJ110824.1-774407 http://www.flickr.com/photos/stephen63/9381928932/sizes/l/in/photostream/ Proposal http://archive.stsci.edu/proposal_search.php?id=12514&mission=hst This is a protoplanetary nebula in the constellation Chamaeleon. Hubble Legacy Archive Data set: SSTGBSJ110824.1-774407 ACS...
by stephen63
Thu Aug 01, 2013 11:11 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Black Hole = Big Bang = Another Universe
Replies: 22
Views: 15546

Re: Black Hole = Big Bang = Another Universe

The equation was written in 1961 by Frank Drake not for purposes of quantifying the number of civilizations, but intended as a way to stimulate scientific dialogue at the world's first SETI meeting, in Green Bank, West Virginia.-Wiki Besides illuminating the factors involved in such a search, the Dr...
by stephen63
Thu Aug 01, 2013 11:00 pm
Forum: The Bridge: Discuss an Astronomy Picture of the Day
Topic: APOD: Moon Over Andromeda (2013 Aug 01)
Replies: 27
Views: 16683

Re: APOD: Moon Over Andromeda (2013 Aug 01)

Link to some images of well known astronomical objects with the moon to scale.
http://astroanarchy.zenfolio.com/p162076373
by stephen63
Thu Aug 01, 2013 6:29 pm
Forum: The Asterisk Café: Discuss Anything Astronomy Related
Topic: Black Hole = Big Bang = Another Universe
Replies: 22
Views: 15546

Re: Black Hole = Big Bang = Another Universe

No. We're here because if we weren't, we wouldn't be. Nothing to do with odds. So, I take it that you're not a fan of the Drake Equation. Why do you say that? The equation seems to me perfectly valid, although perhaps not complete. But it doesn't have anything to do with the fact that the Universe ...