09-14-2014, 10:22 PM
puzzler
Join Date: Aug 2004
Location: UK
Rosetta comet mission
Already interesting, but should get more so over the next few months as the comet nears the sun and the lander touches down. So here's a thread to discuss it.
Here's a size comparison of the comet with Los Angeles.
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Janet (09-16-2014),
JoeP (09-15-2014),
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SR71 (09-14-2014),
Stormlight (11-12-2014),
Watser? (09-25-2014)
09-14-2014, 11:26 PM
Stoic Derelict... The cup is empty
Join Date: Sep 2011
Location: The Dustbin of History
Gender: Male
Re: Rosetta comet mission
Wrong thread!
show spoiler
Sorry cep, could not forego stupid footwear joke.
__________________Chained out, like a sitting duck just waiting for the fall _Cage the Elephant
09-15-2014, 12:15 PM
Solipsist
Join Date: Jul 2004
Location: Kolmannessa kerroksessa
Gender: Male
Re: Rosetta comet mission
Quote:
Originally Posted by
ceptimus
Here's a size comparison of the comet with Luxembourg.
09-15-2014, 09:12 PM
puzzler
Join Date: Aug 2004
Location: UK
Re: Rosetta comet mission
The landing site for the lander, named Philae, has been chosen: it's on the 'head' part of the comet.
The lander will be 'dropped' from Rosetta from about 10km (6 miles) high - it will then free-fall to the comet's surface. The gravity of the comet is very weak, so even after the lander has fallen through that distance it will still only be going at about walking pace when it impacts. Philae is equipped with screws and harpoons in its landing feet, which will hopefully prevent it from bouncing back up or toppling over.
The landing is scheduled for November 11th.
In other news, Philae's camera was fired up recently for tests and used to take this 'selfie'. The camera has much lower resolution than the main cameras on Rosetta itself, but it's still an interesting shot showing parts of the Rosetta spacecraft with the comet in the background.
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livius drusus (11-13-2014),
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SR71 (09-16-2014),
The Lone Ranger (09-18-2014)
09-15-2014, 09:13 PM
A Very Gentle Bort
Join Date: Jan 2005
Location: Bortlandia
Gender: Male
Re: Rosetta comet mission
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09-15-2014, 10:54 PM
Adequately Crumbulent
Join Date: Jan 2005
Location: Cascadia
Gender: Male
Re: Rosetta comet mission
09-16-2014, 04:03 AM
A fellow sophisticate
Join Date: Jul 2004
Location: Cowtown, Kansas
Gender: Male
Re: Rosetta comet mission
We're all going go die.
__________________Sleep - the most beautiful experience in life - except drink.--W.C. Fields
09-16-2014, 05:37 AM
NeoTillichian Hierophant & Partisan Hack
Join Date: Dec 2005
Location: Iowa
Gender: Male
Re: Rosetta comet mission
That is a given.
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09-18-2014, 09:09 AM
Solipsist
Join Date: Jul 2004
Location: Kolmannessa kerroksessa
Gender: Male
Re: Rosetta comet mission
Rosetta's probe may land 500 metres from jets that produce comet's tail | Science | theguardian.com
THE JETS THAT PRODUCE THE COMET'S TAIL, PEOPLE!!!
Quote:
Intriguingly, site J has two “pits”, which look like the origin of jets of gas and dust ejected by the comet to form its tail. Holger Sierks of the Max Planck Institute for the Solar System, Göttingen, estimates that if all goes well, Philae could be just 500-600 metres away from these pits and so have a ringside seat as the jets get stronger the closer the comet gets to the sun in the coming months.
09-29-2014, 02:33 PM
Solipsist
Join Date: Jul 2004
Location: Kolmannessa kerroksessa
Gender: Male
Re: Rosetta comet mission
09-29-2014, 06:18 PM
puzzler
Join Date: Aug 2004
Location: UK
Re: Rosetta comet mission
They changed it from the originally planned
probably just to spite us.
Read
the blog of the lead scientist of the Philae lander . The September 22nd entry about testing the harpoons was an interesting read, and today's entry gives loads of background information about the comet.
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09-29-2014, 06:19 PM
A Very Gentle Bort
Join Date: Jan 2005
Location: Bortlandia
Gender: Male
Re: Rosetta comet mission
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10-27-2014, 08:11 AM
puzzler
Join Date: Aug 2004
Location: UK
Re: Rosetta comet mission
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11-11-2014, 03:52 PM
puzzler
Join Date: Aug 2004
Location: UK
Re: Rosetta comet mission
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11-11-2014, 05:28 PM
Solipsist
Join Date: Jul 2004
Location: Kolmannessa kerroksessa
Gender: Male
Re: Rosetta comet mission
"while you just get set up there ..."
11-11-2014, 06:51 PM
puzzler
Join Date: Aug 2004
Location: UK
Re: Rosetta comet mission
Yeah - they could have edited out a lot of dross before uploading to YouTube - they just copied the whole thing that was streamed live...
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11-11-2014, 07:28 PM
puzzler
Join Date: Aug 2004
Location: UK
Re: Rosetta comet mission
Nice animation showing what the lander is supposed to do if all goes well.
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11-12-2014, 07:37 AM
I read some of your foolish scree, then just skimmed the rest.
Join Date: Jan 2005
Location: Bay Area
Gender: Male
Re: Rosetta comet mission
1 hour till separation, 8 hours till touch down.
Philae is a go.
Hopefully it doesn't bounce.
ESA During checks on the lander’s health, it was discovered that the active descent system, which provides a thrust to avoid rebound at the moment of touchdown, cannot be activated.
11-12-2014, 10:39 AM
puzzler
Join Date: Aug 2004
Location: UK
Re: Rosetta comet mission
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11-12-2014, 11:14 AM
Solipsist
Join Date: Jul 2004
Location: Kolmannessa kerroksessa
Gender: Male
Re: Rosetta comet mission
People talking. And people not talking. Is there a graphic of where the Philae lander is at the moment? Or at least a km to go ticker. I can only find
Where is Rosetta? which show Rosetta and 67P and the solar system, but no zoom in ...
Rosetta and Philae landing timeline | Rosetta - ESA's comet chaser says we should have Acquisition Of Signal at 10:53:20, 20 minutes ago.
ETA:
https://twitter.com/philae2014 tweeted 4 minutes ago:
Quote:
Hello again! It’s nice to be back in contact, Earth! #CometLanding
11-12-2014, 04:03 PM
A fellow sophisticate
Join Date: Jul 2004
Location: Cowtown, Kansas
Gender: Male
Re: Rosetta comet mission
If it finishes, that is.
__________________Sleep - the most beautiful experience in life - except drink.--W.C. Fields
11-12-2014, 04:17 PM
Solipsist
Join Date: Jul 2004
Location: Kolmannessa kerroksessa
Gender: Male
Re: Rosetta comet mission
Touchdown.
Quote:
Philae Lander @Philae2014 · 5m 5 minutes ago
11-12-2014, 04:20 PM
Solipsist
Join Date: Jul 2004
Location: Kolmannessa kerroksessa
Gender: Male
Re: Rosetta comet mission
And on the
live stream ... lots more people talking ...
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Rosetta comet mission
Re: Rosetta comet mission
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