Search found 34 matches
- Tue Jun 12, 2012 5:17 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Thackerays Globules (2012 Jun 12)
- Replies: 16
- Views: 4130
Re: APOD: Thackerays Globules (2012 Jun 12)
Besides size, what is the difference between Thackery's globules and Bok globules?
- Fri May 18, 2012 8:53 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: GALEX: The Andromeda Galaxy (2012 May 18)
- Replies: 26
- Views: 4964
Re: APOD: GALEX: The Andromeda Galaxy (2012 May 18)
I would love to know about the cause of the circular artifacts. Anyone have an detailed explanation?
- Mon Jan 30, 2012 7:18 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Blue Marble Earth from Suomi NPP (2012 Jan 30)
- Replies: 50
- Views: 9662
Re: APOD: Blue Marble Earth from Suomi NPP (2012 Jan 30)
This undeniably beautiful pic still seems to have been made with some distortion in size and shape. The distortion comes from the fact that the perspective is presented as if from an NPP satellite a mere 824 kilometers above Earth. At that altitude the edges of the Earth are about 62º off from Nadi...
- Sat Apr 30, 2011 5:18 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Tycho s Supernova Remnant (2011 Apr 30)
- Replies: 32
- Views: 14245
Re: APOD: Tycho s Supernova Remnant (2011 Apr 30)
But Tycho Brahe is prounounced "TEE-ko BRA-hay" To a Canadian the fix is obvious: Tycho! Tycho! burning bright In the darkness of the night, What exploding white dwarf star Did frame thy remnant from afar, In the distant deep dark skies Under gaze of human eyes? Seen by mortals and their m...
- Mon Apr 04, 2011 10:37 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Verona Rupes: Tallest Known Cliff in... (2011 Apr 04)
- Replies: 21
- Views: 8330
Re: APOD: Verona Rupes: Tallest Known Cliff in... (2011 Apr
The original JPL caption for that photograph reads, "...The fault may be 5 km (3 mi) high, or higher than the walls of the Grand Canyon on Earth.
When and or why did the estimate change to 20 km?
When and or why did the estimate change to 20 km?
- Wed May 02, 2007 6:25 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Gliese 581 and the habitable zone (APOD 26 Apr 2007)
- Replies: 22
- Views: 9714
Metals are also something else red dwarfs don't have much of. I can't see a planet with a metallic core forming under those conditions. Little or no metallic core yields an extremely weak magnetosphere or none at all. No magnetosphere suggests no protection against solar radiation and since this one...
- Fri Jan 12, 2007 6:34 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: The Eagle Nebula (APOD 11 Jan 2007)
- Replies: 6
- Views: 2809
- Tue Nov 28, 2006 1:04 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Spokes in Saturn's Rings (APOD 27 Nov 2006)
- Replies: 13
- Views: 5596
Here's a good discussion:
http://www.nature.com/news/2006/061120/ ... 20-14.html
The ladies name btw is Caroline Porco. She first looked at the spokes back in the Voyager days.
http://www.nature.com/news/2006/061120/ ... 20-14.html
The ladies name btw is Caroline Porco. She first looked at the spokes back in the Voyager days.
- Tue Nov 28, 2006 12:58 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Spokes in Saturn's Rings (APOD 27 Nov 2006)
- Replies: 13
- Views: 5596
I was under the impression that the spokes had been identified as being associated with Saturn's magnetic field. One of the Galileo researchers, (She may have been on another probes team), had done some statistical analysis and showed a direct correlation with the spokes and the planets magnetic fie...