Search found 1570 matches
- Fri Oct 19, 2007 5:31 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Hole in the clouds? What is this?
- Replies: 13
- Views: 4041
gordo, What spledid pics! The last on your website, in blue (moonlight?) are truely weird. But could not this be both 'natural' and the result of a passing aeroplane/ The first above appears to have a straight trail along the cloud before it goes through, and the central wisps seem to extend off in ...
- Tue Oct 16, 2007 8:58 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 14598
- Tue Oct 16, 2007 1:44 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 14598
Re: Iapetus shape and composition theory
How about another far-fetched theory ... On object struck it with such force that it penetrated the surface and lodged itself somewhere near the core of the planet. Large impactors usually strike with so much energy that they splash, rather than shatter, let alone stay intact. Small meteorites can ...
- Tue Oct 09, 2007 9:06 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 14598
The ESA site has just posted a long piece on the lastest images and opinion from the Cassini project. That is that the surface is black-on-white and not the other, and that the black, heat absorbtive surface is driving a process of 'thermal segregation' to exagerrate the contrast. See: http://www.es...
- Sat Oct 06, 2007 8:25 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: 50th Anniversary of Sputnik (APOD 04 Oct 2007)
- Replies: 7
- Views: 2576
- Fri Oct 05, 2007 9:23 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Saguaro Moon (APOD 26 Sep 2007)
- Replies: 21
- Views: 8298
Any of you paranoid sceptics looked at the site of origin of this pic? Collection of Moon pics by Stefan Seip (I think I got that right) at http://www.photomeeting.de/astromeeting/_index.htm (Click on 'Moon') The image right next to the Saguaro one is even spookier. Full Moon, surrounded by stars - ...
- Fri Oct 05, 2007 9:12 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: 50th Anniversary of Sputnik (APOD 04 Oct 2007)
- Replies: 7
- Views: 2576
- Thu Sep 20, 2007 5:56 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 14598
- Thu Sep 20, 2007 6:50 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 14598
Excellent, geckzilla! To add to your observations, without being able to construct such useful annotated pictures, there are some further markings, top left on the photo, that look exactly as if someone had spattered the globe with streaks of paint from a brush, or spatula. Not that they have, but t...
- Wed Sep 19, 2007 4:04 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 14598
More pics from the recent flyby at http://ciclops.org//view_media.php?id=17290 This one shows a most puzzling picture. As it appears on the web, the craters appear as mounds, but if you invert it, or 'flip both', they appear as craters. In either case, a material apperas to be coating elevations and...
- Wed Sep 19, 2007 3:44 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus, WHITE on BLACK (APOD 19 Sep 2007)
- Replies: 39
- Views: 14598
Geckzilla, A most interesting approach! But not one that convinces me, that the black covers the white. In the picture you reversed, the dark terrain is heavily and sharply edged with craters. The white is featureless, implying that it is more recent and covers the dark. Of course, the lack of featu...
- Tue Sep 18, 2007 11:41 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Space walk - forbidden directions? (APOD 16 Sep 2007)
- Replies: 22
- Views: 8310
Just the simple physics of motion JohnD. Try to dock a sail boat under sail at a dock on a flowing river and you will understand a more complex concept of motions. :P I know EXACTLY what you mean, cc! If you can't get the jib to go across at the right moment- disaster looms! Fortunately for astrona...
- Tue Sep 18, 2007 11:36 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Tungurahua eruption.
- Replies: 11
- Views: 4466
- Mon Sep 17, 2007 7:06 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Space walk - forbidden directions? (APOD 16 Sep 2007)
- Replies: 22
- Views: 8310
- Sun Sep 16, 2007 5:47 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: A Path into Victoria Crater on Mars (APOD 04 Sep 2007)
- Replies: 15
- Views: 5330
It's got beyond that, Orin.
Opportunity has completely entered to the crater!
Keep an eye on this website for up to date news, rather than the johnny come lately news desks.
http://marsrovers.jpl.nasa.gov/gallery/ ... 0913a.html
John
Opportunity has completely entered to the crater!
Keep an eye on this website for up to date news, rather than the johnny come lately news desks.
http://marsrovers.jpl.nasa.gov/gallery/ ... 0913a.html
John
- Sun Sep 16, 2007 4:18 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Space walk - forbidden directions? (APOD 16 Sep 2007)
- Replies: 22
- Views: 8310
That's not the scenario that I thought William meant, Andy. To have the Shuttle go off ahead of you and then come around on another orbit, in effect doing one more owrbit that you have, wouldn't you have you be going a LOT slower and LOT further out from the original orbit, or else to wait a very lo...
- Sun Sep 16, 2007 3:13 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Space walk - forbidden directions? (APOD 16 Sep 2007)
- Replies: 22
- Views: 8310
Thank you, William! But why do they drift back again? Left outside, would the hapless astronaut then drift inwards of the shuttle and back? In other words, they have distorted their own orbit to one more eccentrc than the Shuttles's? Ah! You said 45 minutes. That's half of a 90 minute Shutte orbit (...
- Sun Sep 16, 2007 9:30 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Space walk - forbidden directions? (APOD 16 Sep 2007)
- Replies: 22
- Views: 8310
Space walk - forbidden directions? (APOD 16 Sep 2007)
All, APOD 16th September 2007 Great picture of an astronaut totally free of the Shuttle and 100meters away. What an experience! But I see that he has moved away 'to the side', not above or below the Shuttle. Would these be 'forbidden directions'? Because; If he moved straight up, his orbit would be ...
- Sun Sep 16, 2007 8:54 am
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Cassini imags of Lapetus.
- Replies: 16
- Views: 4876
OK, cc, I'll take that as a refusual to back up your assertion with evidence. Or an inability to do so. I'm sorry, cc, but this is a scientific website, and if you propose a theory, you must show the evidence and defend your thesis. Just saying you are too busy right now and anyway, a fool can see t...
- Sat Sep 15, 2007 12:57 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Cassini imags of Lapetus.
- Replies: 16
- Views: 4876
- Sat Sep 15, 2007 7:48 am
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus: Black and white? White and black? (APOD 14 Sep 07)
- Replies: 20
- Views: 7438
- Fri Sep 14, 2007 9:36 pm
- Forum: The Asterisk Café: Discuss Anything Astronomy Related
- Topic: Cassini imags of Lapetus.
- Replies: 16
- Views: 4876
Well lets just say that they obviously wanted to show off the lineal alignment of the craters, , hmmmmm 8) I think you should demonstrate this lineal alignment, cc. Please post a picture with the lines drawn. And show that it is more than joining the dots in a random scatter. See: http://en.wikiped...
- Fri Sep 14, 2007 9:33 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Iapetus: Black and white? White and black? (APOD 14 Sep 07)
- Replies: 20
- Views: 7438
I can't see how this black material can be from secondary impacts, bma. While in the centreof the image, the blackness is to one side of a larger crater, as if drifted, it is dead centre of others to top left of inverted image, and dotted around the interior of the large uppermost crater. Don't look...
- Wed Sep 12, 2007 12:30 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Scorpio/Scorpius (APOD 11 Sep 2007)
- Replies: 12
- Views: 5981
The correct, anatomical name for your thumb is 'pollux'. But you call it a thumb. A surgeon would too, though they would use 'pollucis' (of the thumb) of the muscles that move the thumb. It's all in the context, don't you think? In a formal paper, nothing other than 'Scorpius' will do, but unless th...
- Wed Sep 12, 2007 12:20 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: Six Rainbows Across Norway... (APOD 12 Sep 2007)
- Replies: 22
- Views: 10068
I've seen a 'reflected' rainbow, without it's primary. The bow was diffuse and distorted, but distinct. It looked as if the moor beyond was smeared with colour. Such reflected bows could be termed 'virtual' as, like an ordinary bow, they are centered on an antisolar point, and are 42 degrees from th...