Search found 16 matches
- Thu Mar 28, 2013 5:12 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Unraveling NGC 3169 (2013 Mar 28)
- Replies: 19
- Views: 2592
Re: APOD: Unraveling NGC 3169 (2013 Mar 28)
Would Andromeda and the Milky Way appear this close together from 70 M light years away?
- Sat Sep 22, 2012 5:37 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Austrian Analemma (2012 Sep 22)
- Replies: 22
- Views: 6011
Re: APOD: Austrian Analemma (2012 Sep 22)
I'm curious. Would one have to take this sequence of photos on the equator for the Analemma to be the perfect figure 8? The farther north, the smaller the upper 8 arc? The farther south the smaller lower 8 arc?
- Tue Aug 14, 2012 6:38 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Spiral Galaxy NGC 4038 in Collision (2012 Aug 12)
- Replies: 24
- Views: 5197
Re: APOD: Spiral Galaxy NGC 4038 in Collision (2012 Aug 12)
Eloquent. Thank you. So I suspect "A flight through the universe, APOD, Aug 13, shows most of the galaxies moving slower than "c" in relationship to us, the Milky Way, when their photons were first emitted? If so, can we observe "winking out" galaxies as they approach c? Can...
- Tue Aug 14, 2012 5:47 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Spiral Galaxy NGC 4038 in Collision (2012 Aug 12)
- Replies: 24
- Views: 5197
Re: APOD: Spiral Galaxy NGC 4038 in Collision (2012 Aug 12)
Light Speed Relativity Dance Please forgive me if I cannot write clearly enough to capture my question in copy. But I'll try. (http://curious.astro.cornell.edu/question.php?number=575) Assuming it's true that a galaxy can travel faster than the speed of light through space [relative to another galax...
- Tue Aug 14, 2012 5:13 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Flight Through the Universe (2012 Aug 13)
- Replies: 47
- Views: 20445
Re: APOD: A Flight Through the Universe (2012 Aug 13)
This is a tremendous effort. Thank you. However, have you ever considered this: We all know the farther away we gaze the farther back in time we're looking. So, this map is really a very, very old map. Could we extrapolate "where the galaxies would be now"? Since we could never, ever, trav...
- Wed Jun 27, 2012 9:27 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Simeis 188 in Stars, Dust and Gas (2012 Jun 27)
- Replies: 11
- Views: 6441
Re: APOD: Simeis 188 in Stars, Dust and Gas (2012 Jun 27)
Excellent answer. Thank you. Though the star forming (an annihilating) tumultuous regions of our Milky Way and beyond are stunning optical dazzlers I suspect the tracks left by Goldilocks and her flock might be more fruitful searching Ann's random star field? Truly, no matter where we sleuth, I do s...
- Wed Jun 27, 2012 7:12 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Simeis 188 in Stars, Dust and Gas (2012 Jun 27)
- Replies: 11
- Views: 6441
Re: APOD: Simeis 188 in Stars, Dust and Gas (2012 Jun 27)
Curious what our solar system and neighborhood would look like @ 5000 light years away? Would we have "dust" and ribbons of "dark clouds"? Or just an uneventful section of uninteresting space?
- Mon Apr 11, 2011 6:53 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Sunspot Loops in Ultraviolet (2011 Apr 10)
- Replies: 15
- Views: 6386
Re: APOD: Sunspot Loops in Ultraviolet (2011 Apr 10)
Howdy... sensational image today. Question: As the speed of light is "absolute." And "absolute zero" is, well, absolute. Is there an "absolute" high temperature? OK... here's the real answer: http://www.pbs.org/wgbh/nova/physics/absolute-hot.html (hint: there is no ans...
- Sun Apr 10, 2011 5:18 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Sunspot Loops in Ultraviolet (2011 Apr 10)
- Replies: 15
- Views: 6386
Re: APOD: Sunspot Loops in Ultraviolet (2011 Apr 10)
Howdy... sensational image today. Question: As the speed of light is "absolute." And "absolute zero" is, well, absolute. Is there an "absolute" high temperature?
- Mon Nov 15, 2010 4:20 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Home from Above (2010 Nov 15)
- Replies: 165
- Views: 41126
Re: APOD: Home from Above (2010 Nov 15)
Does Max Q need a ukulele player? http://myuke.com
- Mon Nov 15, 2010 4:18 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Multiverses: Do Other Universes Exist? (2010 Nov 14)
- Replies: 53
- Views: 6409
Re: APOD: Multiverses: Do Other Universes Exist? (2010 Nov 1
So what is "between" them?
- Sun Oct 10, 2010 6:49 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Moonquakes Surprisingly Common (2010 Oct 10)
- Replies: 40
- Views: 5178
Re: APOD: Moonquakes Surprisingly Common (2010 Oct 10)
Just above the lunar seismometer is an angle'd white "box." I'm assuming this is the packet of corner cube retro reflectors deployed about all the landing sites? An earthbound laser would target the retroreflectos for several reasons. First, to time the light's return to accurately measure...
- Thu Jul 01, 2010 5:54 pm
- Forum: The Library: Information Desk and Educational Resources
- Topic: Can "cause & effect" travel faster than the speed of light?
- Replies: 33
- Views: 4130
Can "cause & effect" travel faster than the speed of light?
A straw filled with air, sealed at both ends. I press on one end and the other end bulges. Or a stick. I move one end and the other end moves. The straw goes between here and the moon. I could tap out "hi" in morse code on my end of the straw. Would my "hi" reach the moon faster ...
- Tue Nov 17, 2009 6:52 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Dawn Before Nova (APOD 17 November 2009)
- Replies: 13
- Views: 2095
Re: Dawn Before Nova (APOD 17 November 2009)
The lighting in this painting is all wrong! The crescent moons indicate the direction of the main light source, which should be where these two lines intersect. There is nothing there! You could send an email to the artist and tell him so..... (his contact info is directly underneath the image.) :r...
- Wed Nov 04, 2009 3:51 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Now there's an interesting shot! (2009 Nov 1)
- Replies: 35
- Views: 4976
Re: Now there's an interesting shot! (2009 Nov 1)
Perhaps it is our "definition" of the color light that is confusing. We describe it in simple terms like RGB, CMYK, Pantone, etc. One could ask if the absence of "color" is also "part of our universe"? You have to admit that we all see black. We see these black pixels (...
- Wed Nov 04, 2009 5:27 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Now there's an interesting shot! (2009 Nov 1)
- Replies: 35
- Views: 4976
Re: Now there's an interesting shot! (2009 Nov 1)
Color? Additive color? Subtractive color? Transmissive color? Reflective color? Is black a color? In reflective coloring it is. In spectral color is it? I'd suspect a lot of analytics and math when in to determining the exact "color" of the electromatic spectral spectrum. But the brain, th...