Best image yet I've seen of 67P from Rosetta: http://blogs.esa.int/rosetta/files/2014/10/ESA_Rosetta_NAVCAM_141018_D.jpg Can't wait to see what the lander sees when it lands next month. patrick
I think I see some cows grazing on the hillside over there .... a couple of guys playing Alpenhorns ... somebody yodeling. ________________________________ From: Wiggins Patrick <paw@getbeehive.net> To: Astronomy Utah <utah-astronomy@mailman.xmission.com> Sent: Tuesday, October 28, 2014 11:05 PM Subject: [Utah-astronomy] 67P close up Best image yet I've seen of 67P from Rosetta: http://blogs.esa.int/rosetta/files/2014/10/ESA_Rosetta_NAVCAM_141018_D.jpg Can't wait to see what the lander sees when it lands next month. patrick _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".
Somebody call Joe's wife and make sure he's still taking his medication... ;-) On Tue, Oct 28, 2014 at 11:28 PM, Joe Bauman via Utah-Astronomy < utah-astronomy@mailman.xmission.com> wrote:
I think I see some cows grazing on the hillside over there .... a couple of guys playing Alpenhorns ... somebody yodeling.
I'm with Joe -- the sub-meter resolution is fantastic!/R From: Joe Bauman via Utah-Astronomy <utah-astronomy@mailman.xmission.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Tuesday, October 28, 2014 11:28 PM Subject: Re: [Utah-astronomy] 67P close up I think I see some cows grazing on the hillside over there .... a couple of guys playing Alpenhorns ... somebody yodeling. ________________________________ From: Wiggins Patrick <paw@getbeehive.net> To: Astronomy Utah <utah-astronomy@mailman.xmission.com> Sent: Tuesday, October 28, 2014 11:05 PM Subject: [Utah-astronomy] 67P close up Best image yet I've seen of 67P from Rosetta: http://blogs.esa.int/rosetta/files/2014/10/ESA_Rosetta_NAVCAM_141018_D.jpg Can't wait to see what the lander sees when it lands next month. patrick _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options". _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".
What an amazing shot! Who ever thought that comets would have dunes? I see a whole new source of potential funding for future missions - "Cruise the sandunes of 67P in your space buggy!" On Wednesday, October 29, 2014 8:51 AM, Richard Tenney via Utah-Astronomy <utah-astronomy@mailman.xmission.com> wrote: I'm with Joe -- the sub-meter resolution is fantastic!/R From: Joe Bauman via Utah-Astronomy <utah-astronomy@mailman.xmission.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Tuesday, October 28, 2014 11:28 PM Subject: Re: [Utah-astronomy] 67P close up I think I see some cows grazing on the hillside over there .... a couple of guys playing Alpenhorns ... somebody yodeling. ________________________________ From: Wiggins Patrick <paw@getbeehive.net> To: Astronomy Utah <utah-astronomy@mailman.xmission.com> Sent: Tuesday, October 28, 2014 11:05 PM Subject: [Utah-astronomy] 67P close up Best image yet I've seen of 67P from Rosetta: http://blogs.esa.int/rosetta/files/2014/10/ESA_Rosetta_NAVCAM_141018_D.jpg Can't wait to see what the lander sees when it lands next month. patrick _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options". _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options". _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".
With the microgravity that exists on that comet, you could launch yourself into orbit with one hand. No space buggy industry there. That's why the lander has to anchor itself with a couple of harpoons. Otherwise it might just bounce right off. I'd get vertigo standing just about anywhere on that comet. Puke in a space helmet is not a good thing. On Wed, Oct 29, 2014 at 9:55 AM, Howard Jackman via Utah-Astronomy < utah-astronomy@mailman.xmission.com> wrote:
What an amazing shot! Who ever thought that comets would have dunes? I see a whole new source of potential funding for future missions - "Cruise the sandunes of 67P in your space buggy!"
With that low of gravity, would you feel different 'pulls' depending on how tall you are, or how high something is being held from the surface? Like if you drop a wrench from knee high, would it be more likely to fall to the surface rather than a wrench dropped from shoulder height? Dan -- Daniel Holmes, danielh@holmesonics.com "Laugh while you can, monkey boy!" -- Lord John Whorfin
On Oct 29, 2014, at 11:40 AM, Chuck Hards <chuck.hards@gmail.com> wrote:
With the microgravity that exists on that comet, you could launch yourself into orbit with one hand. No space buggy industry there.
That's why the lander has to anchor itself with a couple of harpoons. Otherwise it might just bounce right off.
I'd get vertigo standing just about anywhere on that comet. Puke in a space helmet is not a good thing.
On Wed, Oct 29, 2014 at 9:55 AM, Howard Jackman via Utah-Astronomy < utah-astronomy@mailman.xmission.com> wrote:
What an amazing shot! Who ever thought that comets would have dunes? I see a whole new source of potential funding for future missions - "Cruise the sandunes of 67P in your space buggy!"
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Dan, The math would be easier if 67P were a sphere. However, because of its dumbbell shape, I'm guessing that there are all kinds of interesting variables that determine which way "down" is depending on where you're standing. If you're standing on the narrow little waist of the comet, and one side of the dumbbell has more mass than the other (a safe bet), then the center of gravity, and therefore the direction of "down," could easily be somewhat sideways from you. About the only thing I could say with confidence is that your wrench would fall _very_ slowly. Seth -----Original Message----- From: Utah-Astronomy [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Daniel Holmes Sent: Wednesday, October 29, 2014 3:04 PM To: Utah-astronomy Astronomy Subject: Re: [Utah-astronomy] 67P close up With that low of gravity, would you feel different 'pulls' depending on how tall you are, or how high something is being held from the surface? Like if you drop a wrench from knee high, would it be more likely to fall to the surface rather than a wrench dropped from shoulder height? Dan -- Daniel Holmes, danielh@holmesonics.com "Laugh while you can, monkey boy!" -- Lord John Whorfin
On Oct 29, 2014, at 11:40 AM, Chuck Hards <chuck.hards@gmail.com> wrote:
With the microgravity that exists on that comet, you could launch yourself into orbit with one hand. No space buggy industry there.
That's why the lander has to anchor itself with a couple of harpoons. Otherwise it might just bounce right off.
I'd get vertigo standing just about anywhere on that comet. Puke in a space helmet is not a good thing.
On Wed, Oct 29, 2014 at 9:55 AM, Howard Jackman via Utah-Astronomy < utah-astronomy@mailman.xmission.com> wrote:
What an amazing shot! Who ever thought that comets would have dunes? I see a whole new source of potential funding for future missions - "Cruise the sandunes of 67P in your space buggy!"
_______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy
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_______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Send messages to the list to Utah-Astronomy@mailman.xmission.com The Utah-Astronomy mailing list is not affiliated with any astronomy club. To unsubscribe go to: http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Then enter your email address in the space provided and click on "Unsubscribe or edit options".
I went to public school. All of my thought experiments start out with "assume a perfect sphere". :-) I started to try and do some math, but then my brain hurt, the phone rang, I made a sandwich, and I forgot about it. But it seems that where escape velocity is the same, the energy input required to reach such velocities on such small gravitational bodies would be different from different heights (just like it is here on Earth, although I think atmospheric drag has a larger impact). I was just having a hard time figuring out if a person would notice. Thanks, Dan -- Daniel Holmes, danielh@holmesonics.com "Laugh while you can, monkey boy!" -- Lord John Whorfin
On Oct 29, 2014, at 3:35 PM, Seth Jarvis <SJarvis@slco.org> wrote:
Dan,
The math would be easier if 67P were a sphere. However, because of its dumbbell shape, I'm guessing that there are all kinds of interesting variables that determine which way "down" is depending on where you're standing. If you're standing on the narrow little waist of the comet, and one side of the dumbbell has more mass than the other (a safe bet), then the center of gravity, and therefore the direction of "down," could easily be somewhat sideways from you.
About the only thing I could say with confidence is that your wrench would fall _very_ slowly.
Seth
-----Original Message----- From: Utah-Astronomy [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Daniel Holmes Sent: Wednesday, October 29, 2014 3:04 PM To: Utah-astronomy Astronomy Subject: Re: [Utah-astronomy] 67P close up
With that low of gravity, would you feel different 'pulls' depending on how tall you are, or how high something is being held from the surface? Like if you drop a wrench from knee high, would it be more likely to fall to the surface rather than a wrench dropped from shoulder height?
Dan
-- Daniel Holmes, danielh@holmesonics.com "Laugh while you can, monkey boy!" -- Lord John Whorfin
On Oct 29, 2014, at 11:40 AM, Chuck Hards <chuck.hards@gmail.com> wrote:
With the microgravity that exists on that comet, you could launch yourself into orbit with one hand. No space buggy industry there.
That's why the lander has to anchor itself with a couple of harpoons. Otherwise it might just bounce right off.
I'd get vertigo standing just about anywhere on that comet. Puke in a space helmet is not a good thing.
On Wed, Oct 29, 2014 at 9:55 AM, Howard Jackman via Utah-Astronomy < utah-astronomy@mailman.xmission.com> wrote:
What an amazing shot! Who ever thought that comets would have dunes? I see a whole new source of potential funding for future missions - "Cruise the sandunes of 67P in your space buggy!"
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participants (7)
-
Chuck Hards -
Daniel Holmes -
Howard Jackman -
Joe Bauman -
Richard Tenney -
Seth Jarvis -
Wiggins Patrick