Search found 319 matches
- Mon Apr 14, 2014 4:27 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: An Unusual Globule in IC 1396 (2014 Apr 14)
- Replies: 22
- Views: 5862
Re: APOD: An Unusual Globule in IC 1396 (2014 Apr 14)
APOD Job Security: Discovery of such wonders will never cease. How do you choose a thesis topic when there is so much 'there' there?
- Sat Apr 05, 2014 3:12 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Lunar Farside (2014 Apr 05)
- Replies: 22
- Views: 7350
Re: APOD: Lunar Farside (2014 Apr 05)
Ha! I knew it! Why, there it is in plain sight! Sew! who is making book on the crash? What are the odds posted in that Las Vegas Casino that takes all bets? [Maria! Maria! I just met a flow named Maria! *ouch* I promise, no more show tunes; let go of my arm.] (Apologies to the cast of "Westside...
- Thu Apr 03, 2014 5:11 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: At the Edge of NGC 2174 (2014 Apr 03)
- Replies: 23
- Views: 8920
Re: APOD: At the Edge of NGC 2174 (2014 Apr 03)
I wonder if we can detect the movement of the clouds over short periods of time. If we pointed Hubbel at the same coordinates in a year or two, would the two images be identical? I suspect they would be, considering the enormous distances involved, where a millimeter on the printed image is a bazzil...
- Sun Mar 30, 2014 5:26 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Io in True Color (2014 Mar 30)
- Replies: 10
- Views: 4100
Re: APOD: Io in True Color (2014 Mar 30)
[Retired University of Arizona employees and/or alumni do not have access to the University Library resources. All I can read is the abstract.] The full-size image is fascinating. There is not atmosphere, so the only forces on volcanic plumes are the ejection and gravity. Interesting patterns for fl...
- Sat Mar 29, 2014 12:19 am
- Forum: The Communications Center: Breaking Science News
- Topic: Solar System has a new most-distant member
- Replies: 22
- Views: 3557
Re: Solar System has a new most-distant member
I knew of the Ort Cloud, what I learned in this article is that the cloud orbits the Sun. How? I kind-of thought they were relatively stationary objects gravity-bound to the Sun. Does each object in the Ort Clout have a different orbit; parabolic or circular? What paths do they take? One graphic I c...
- Thu Mar 27, 2014 5:26 pm
- Forum: The Communications Center: Breaking Science News
- Topic: Solar System has a new most-distant member
- Replies: 22
- Views: 3557
Re: Solar System has a new most-distant member
My money was on the 2012 VP113 discovery instead of the ringed asteroid out past Saturn.
http://www.bbc.com/news/science-environment-26737376
Odd, how they withheld all information until the press conference in Brazil.
http://www.bbc.com/news/science-environment-26737376
Odd, how they withheld all information until the press conference in Brazil.
- Sat Mar 22, 2014 3:12 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Martian Chiaroscuro (2014 Mar 22)
- Replies: 11
- Views: 2992
Re: APOD: Martian Chiaroscuro (2014 Mar 22)
Have they tried a cortisone ointment on that?
- Mon Mar 17, 2014 2:55 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Warped Sky: Star Trails over Arches... (2014 Mar 17)
- Replies: 12
- Views: 2802
Re: APOD: Warped Sky: Star Trails over Arches... (2014 Mar 1
Polaris appears stationary. Is that because of the short exposure time? Longer such exposures show Polaris circling a point above Earth's rotational axis. Perhaps the 13Kyr precession has put Polaris back in its place above our Celestial North Pole?
- Fri Mar 14, 2014 4:39 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Polar Ring Galaxy NGC 2685 (2014 Mar 14)
- Replies: 83
- Views: 5646
Re: APOD: Polar Ring Galaxy NGC 2685 (2014 Mar 14)
http://ned.ipac.caltech.edu/level5/Arp/Figures/big_arp336.jpeg I concur! This is indeed a peculiar galaxy. http://ned.ipac.caltech.edu/help/faq3.html#3a - Never heard of "Galactic Extinction" before. Lots of papers to read. I presume galactic extinction is not at all like dinosaur species ...
- Mon Mar 10, 2014 8:58 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Gamma Rays from Galactic Center Dark... (2014 Mar 10)
- Replies: 46
- Views: 7368
Re: APOD: Gamma Rays from Galactic Center Dark... (2014 Mar
http://science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy/ Boy, when I'm wrong, I really get it wrong, something that is self-evident to the casual observer. I did not know that in 1998 Hubble observations showed that things were accelerating a lot slower a long, long time ago in a land f...
- Mon Mar 10, 2014 3:22 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Gamma Rays from Galactic Center Dark... (2014 Mar 10)
- Replies: 46
- Views: 7368
Re: APOD: Gamma Rays from Galactic Center Dark... (2014 Mar
Why not just call it a mystery? FMTM - Mystery To Me. How did they count every single star in a nearby galaxy, including the black holes, supernovae remnants and all? Without a clue as to what is inside a galactic center, how do we know there is insufficient force to keep a galaxy from flying apart?...
- Sun Mar 09, 2014 2:28 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A Hole in Mars (2014 Mar 09)
- Replies: 40
- Views: 5985
Re: APOD: A Hole in Mars (2014 Mar 09)
Holey Mars, Batman, a Martian pub!
- Fri Mar 07, 2014 3:00 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: A View from the Zone (2014 Mar 07)
- Replies: 27
- Views: 5272
Re: APOD: A View from the Zone (2014 Mar 07)
Thanks to reading APODs, I can now point out a couple of globular clusters right of center.
- Thu Mar 06, 2014 3:00 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: NGC 1333 Stardust (2014 Mar 06)
- Replies: 14
- Views: 3927
- Tue Mar 04, 2014 4:30 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Sun and Prominence (2014 Mar 04)
- Replies: 17
- Views: 3950
Re: APOD: Sun and Prominence (2014 Mar 04)
[Delete this before reading it.] Why did the space chicken cross the nebula?
- Tue Mar 04, 2014 4:28 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Sun and Prominence (2014 Mar 04)
- Replies: 17
- Views: 3950
Re: APOD: Sun and Prominence (2014 Mar 04)
I did not know that those beasties were above the solar surface in the photosphere, like a layer of clouds, or that different gasses could change layers. The granulation around a sunspot in the photosphere suggests that there may be another layer below that. Somewhere among the related sites listed ...
- Sat Mar 01, 2014 3:16 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: NGC 7331 and Beyond (2014 Mar 01)
- Replies: 11
- Views: 2748
Re: APOD: NGC 7331 and Beyond (2014 Mar 01)
For your wallpaper, I suggest the full-sized image: http://stargazer-observatory.com/wp-content/uploads/2014/01/NGC7331.jpg Wow! The sense of depth and all of those background galaxies, some no larger than the width of a nearby star, gives one pause. I could stare at that all day. PS. There are inde...
- Fri Feb 21, 2014 8:19 pm
- Forum: The Observation Deck: Latest Sky Photography
- Topic: Submissions: 2014 February
- Replies: 225
- Views: 64676
- Fri Feb 21, 2014 2:41 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: The Long Jet of the Lighthouse Nebula (2014 Feb 21)
- Replies: 20
- Views: 4297
Re: APOD: The Long Jet of the Lighthouse Nebula (2014 Feb 21
Is there any other way to explain those radio pulses than a spinning neutron star? I would have thought that the jet streaming off to the right would indicate the axis of rotation. Since the jet traces a spiral pattern, perhaps that was the early axis of rotation that deteriorated into what we now d...
- Mon Feb 10, 2014 2:48 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Falling to Earth (2014 Feb 10)
- Replies: 44
- Views: 4575
Re: APOD: Falling to Earth (2014 Feb 10)
Umm...scratch that one from my bucket list!
- Sat Feb 01, 2014 4:57 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: NGC 6188 and NGC 6164 (2014 Feb 01)
- Replies: 14
- Views: 3589
Re: APOD: NGC 6188 and NGC 6164 (2014 Feb 01)
Aha! It's not as simple as I was led to believe: https://en.wikipedia.org/wiki/Stellar_nucleosynthesis That wiki article shows a picture of the innards of a red giant just prior to supernova. There be sulfur in the silicon shell. (I'd go back to school and sit in on some physics lectures, but I've f...
- Sat Feb 01, 2014 4:13 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: NGC 6188 and NGC 6164 (2014 Feb 01)
- Replies: 14
- Views: 3589
Re: APOD: NGC 6188 and NGC 6164 (2014 Feb 01)
Ditto; what starsurfer said. I learned the supernova onion sequence, that is, the elements that fuse starting with hydrogen fusion to iron, which can't fuse due to insufficient energy leading to a big badaboom: H, He, C, O, Ne, Mg, Si, and finally Fe. In the Periodic Table of Elements, hydrogen fusi...
- Mon Jan 27, 2014 4:13 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: From the Northern to the Southern Cross (2014 Jan 27)
- Replies: 51
- Views: 6878
Re: APOD: From the Northern to the Southern Cross (2014 Jan
Here in the Sonoran Desert, we have coyotes that start whooping it up at moonrise. I didn't know that the Atacama Desert could support feral donkeys. There is another bright spot above Venus, making three lights from dimmest to the Moon (Alice). Er, what is it;;;? Use the ; Chicago Manual of Style ;...
- Sun Jan 26, 2014 4:32 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Sunspot Loops in Ultraviolet (2014 Jan 26)
- Replies: 20
- Views: 2883
Re: APOD: Sunspot Loops in Ultraviolet (2014 Jan 26)
The concentration of carbon dioxide as measured from a mountain observatory in Hawai'i displays a continuously rising function when plotted concentration vs time. The same evidence is stored in seabed core samples showing the current increasing rate since the beginning of the industrial revolution w...
- Sat Jan 25, 2014 4:05 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Baryon Acoustic Oscillations from... (2014 Jan 20)
- Replies: 53
- Views: 27049