Search found 786 matches
- Sun Apr 06, 2014 11:47 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Lunar Farside (2014 Apr 05)
- Replies: 22
- Views: 7702
Re: APOD: Lunar Farside (2014 Apr 05)
Sea of Moscow I see. What is the other smaller sea? The small dark spot to the lower left of Moscoviense is the flooded crater Tsiolkovkiy. Mare Ingenii, the only other named mare on the farside, is slightly south/below Tsiolokovskiy and toward the center of the image. Ingenii doesn't look much lik...
- Thu Apr 03, 2014 11:33 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Mars Red and Spica Blue (2014 Apr 02)
- Replies: 19
- Views: 5580
Re: APOD: Mars Red and Spica Blue (2014 Apr 02)
That's what I figured.Chris Peterson wrote:Like "archive".Anthony Barreiro wrote:How is arXiv pronounced?
- Thu Apr 03, 2014 9:34 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: 9454
Re: APOD: At the Edge of NGC 2174 (2014 Apr 03)
Well, he didn't say it was transparent to gamma rays. Then again, he didn't say it was opaque to them, either. He also didn't say that pigs could fly, but he didn't say they couldn't, either. Once you start wandering around in counterfactual hypothetical land, it's easy to lose your bearings. :ssmi...
- Thu Apr 03, 2014 7:34 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: 9454
Re: APOD: At the Edge of NGC 2174 (2014 Apr 03)
I think you went the wrong way, Anthony. The opaque atmosphere wouldn't let anything but infrared and longer through. These creatures would have no tolerance for red light, much less UV and gamma rays. I was following Chris' hypothetical scenario of an atmosphere transparent to gamma rays and opaqu...
- Thu Apr 03, 2014 6:53 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: 9454
Re: APOD: At the Edge of NGC 2174 (2014 Apr 03)
Oh, and while we're at it, let's be grateful that our atmosphere is transparent to visible light, but largely opaque to ultraviolet, x-rays, and gamma rays! Wouldn't want to get a gamma ray sunburn. Were it different, we might have evolved different senses entirely. And you'd be happy for that opti...
- Thu Apr 03, 2014 6:42 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Mars Red and Spica Blue (2014 Apr 02)
- Replies: 19
- Views: 5580
Re: APOD: Mars Red and Spica Blue (2014 Apr 02)
All I need is a pronunciation key for Ophiuchus. I can't seem to remember that one. The other day I learned from owlice how to pronounce Arxiv and felt pretty silly for thinking it was pronounced ark-siv but these things always happen when you never hear anyone say them. Oh-fee-UCK-us? That's how I...
- Thu Apr 03, 2014 6:04 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: 9454
Re: APOD: At the Edge of NGC 2174 (2014 Apr 03)
Oh, and while we're at it, let's be grateful that our atmosphere is transparent to visible light, but largely opaque to ultraviolet, x-rays, and gamma rays! Wouldn't want to get a gamma ray sunburn.
- Thu Apr 03, 2014 5:31 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: 9454
Re: APOD: At the Edge of NGC 2174 (2014 Apr 03)
It's fun to blink this image between the visible light and invisible infrared to see all the extra things we missed with visible light. Hidden stars, galaxies, and some likely polar jets in one of the dust pillars which don't have designations yet because they were just revealed by Hubble. http://a...
- Thu Apr 03, 2014 4:16 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Mars Red and Spica Blue (2014 Apr 02)
- Replies: 19
- Views: 5580
Re: APOD: Mars Red and Spica Blue (2014 Apr 02)
The ' Pronounced "spy-kah" ' interested me as I've always pronounced it as 'spee-kah', though I don't know why as 'spy-kah' does seem the more likely pronunciation. Your pronunciation would make more sense, since that's pretty close to the way spīca is pronounced in either classical or vu...
- Wed Apr 02, 2014 11:47 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Mars Red and Spica Blue (2014 Apr 02)
- Replies: 19
- Views: 5580
Re: APOD: Mars Red and Spica Blue (2014 Apr 02)
This is a really lovely image. I've been enjoying watching Mars and Spica rising earlier week by week, and watching Mars brighten dramatically. The few telescopic views I had of Mars a few weeks ago were unremarkable, and now we've had a run of cloudy, rainy weather (very welcome, we're having a dro...
- Tue Apr 01, 2014 10:59 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Space Station Robot Forgets Key Again (2014 Apr 01)
- Replies: 35
- Views: 16007
Re: APOD: Space Station Robot Forgets Key Again (2014 Apr 01
More breaking news from the cutting edge of astronomical research, publication date April 1, 2014.
- Tue Apr 01, 2014 7:08 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Space Station Robot Forgets Key Again (2014 Apr 01)
- Replies: 35
- Views: 16007
Re: APOD: Space Station Robot Forgets Key Again (2014 Apr 01
"Pray that there's intelligent life somewhere out in space, 'cuz there's bugger all down here on Earth."
Click to play embedded YouTube video.
- Mon Mar 31, 2014 7:50 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: optics question
- Replies: 1
- Views: 398
optics question
Hi folks. I just bought a new pair of 8x42 binoculars, BAK-4 porro-prisms, fully multicoated, to use both during the day and at night. Overall they seem very good, with bright images and no obvious chromatic aberration or coma. But one of the barrels shows very bright objects (Jupiter and Venus) wit...
- Mon Mar 31, 2014 7:39 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: 2012 VP113: A New Furthest Known in... (2014 Mar 31)
- Replies: 37
- Views: 13817
Re: APOD: 2012 VP113: A New Furthest Known in... (2014 Mar 3
The text should make clear that it is the furthest known perihelion . OK I updated the text again (but not the title). The second sentence now makes "orbit" more clear, in the context of the explanation and title, by starting "In terms of how close it will ever get to the Sun..."...
- Thu Mar 27, 2014 6:35 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Stephan's Quintet Plus One (2014 Mar 27)
- Replies: 18
- Views: 4585
Re: APOD: Stephan's Quintet Plus One (2014 Mar 27)
I was wondering what NGC 7320 would look like if it were pushed back to be with the other galaxies and calculated that it would be about 20% of its apparent size at that distance. If it were anywhere near the others it would be quickly distorted and probably integrated into its neighbors like a lit...
- Wed Mar 26, 2014 5:37 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: M78 and Reflecting Dust Clouds (2014 Mar 26)
- Replies: 10
- Views: 3169
Re: APOD: M78 and Reflecting Dust Clouds (2014 Mar 26)
Another really exciting picture. This quote has me pleased as I always feel like these images are beyond the threshold of mere mortals like myself: "and visible through a small telescope" Any object in the Messier catalogue can be seen in a small telescope if the sky is dark. A few are br...
- Tue Mar 25, 2014 9:22 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Orion Nebula in Surrounding Dust (2014 Mar 25)
- Replies: 19
- Views: 4131
Re: APOD: Orion Nebula in Surrounding Dust (2014 Mar 25)
Good. Thank you, BMAONE23. Now I know where the nebula, which I can't see, is in relation to the constellation, which I can. =0) Actually you can see the Orion nebula in a reasonably dark sky. To the unaided eye the middle "star" in Orion's sword looks fuzzy, rather than being a sharp poi...
- Mon Mar 24, 2014 6:29 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Orion and Aurora over Iceland (2014 Mar 24)
- Replies: 20
- Views: 4583
Re: APOD: Orion and Aurora over Iceland (2014 Mar 24)
I was wondering the same thing- i didnt see anyone in the picture either. This is a really exciting and timely picture. We are plannning to go to England and Iceland in early July. My wife and kids both asked me on friday night if we will see some northern lights in Iceland. I told them I didnt thi...
- Fri Mar 21, 2014 10:33 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Star Trails over El Capitan (2014 Mar 21)
- Replies: 16
- Views: 5883
Re: APOD: Star Trails over El Capitan (2014 Mar 21)
... climbing team [at] night ... Adding to the list of things that scare me if I were asked to do that : +Night rock climbing :no: While certifiably insane speed climbers have climbed El Capitan in less than three hours, typical ascents take three or four days. Climbers sleep in hammocks hanging fr...
- Thu Mar 20, 2014 6:51 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Cosmic Microwave Map Swirls Indicate... (2014 Mar 18)
- Replies: 75
- Views: 18098
Re: APOD: Cosmic Microwave Map Swirls Indicate... (2014 Mar
OK - now how about entanglement ? Wasn't it demonstrated in a lab on one of the Canary Islands ? I'm trying to enumerate things that are generally known to travel faster than light. What do they know that we don't know ? Wikipedia has a good list . The important point about quantum entanglement, an...
- Wed Mar 19, 2014 11:49 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Equinox on a Spinning Earth (2014 Mar 19)
- Replies: 37
- Views: 16217
Re: APOD: Equinox on a Spinning Earth (2014 Mar 19)
The following link shows the terminator about one minute after equinox -- 2014-03-20 16:57 UT -- on a more conventional 2-D world map projection: http://www.timeanddate.com/worldclock/sunearth.html?n=0&day=20&month=3&year=2014&hour=16&min=58&sec=0 Happy Northward Equinox. En...
- Wed Mar 19, 2014 9:32 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Cosmic Microwave Map Swirls Indicate... (2014 Mar 18)
- Replies: 75
- Views: 18098
Re: APOD: Cosmic Microwave Map Swirls Indicate... (2014 Mar
neufer wrote:http://en.wikipedia.org/wiki/Graviton_%28comics%29 wrote:... Aside from his powers to manipulate gravity, Hall had a PhD in Physics and was intellectually brilliant, with expertise in advanced physics, including teleportation. His greatest limitation was that he was emotionally and mentally very disturbed.>> (Art?)
- Wed Mar 19, 2014 9:28 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Cosmic Microwave Map Swirls Indicate... (2014 Mar 18)
- Replies: 75
- Views: 18098
Re: APOD: Cosmic Microwave Map Swirls Indicate... (2014 Mar
Isn't inflation supposedly something that initially spread out faster than light ? Yes. Einstein's special theory of relativity says that nothing can move through space faster than the speed of light. But during the moment of inflation space seems to have expanded faster than the light that was tra...
- Wed Mar 19, 2014 9:22 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Equinox on a Spinning Earth (2014 Mar 19)
- Replies: 37
- Views: 16217
Re: APOD: Equinox on a Spinning Earth (2014 Mar 19)
No worries. I'm not the moderator, either.FloridaMike wrote:WAIT! I thought this was an art discussion forum, my bad!Anthony Barreiro wrote:If this were an art theory discussion board and I were the moderator, my finger would be itching over the delete button.
- Wed Mar 19, 2014 9:20 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Equinox on a Spinning Earth (2014 Mar 19)
- Replies: 37
- Views: 16217
Re: APOD: Equinox on a Spinning Earth (2014 Mar 19)
Hurray, Equinox!!!!! Got to get out the drums, and the beads, and the horns, and make a Bonfire, get out the Chant Book, etc.....so many things to do..... Very interesting video...thanks! :---[===] * Yes, I'm looking forward to measuring my shadow at local solar noon tomorrow ... . Just one small w...