Rosetta Probe

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Discussion

XM5ER

5,087 posts

247 months

Tuesday 16th June 2015
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Very true. But if does make a coma but has no ice then we have to start looking for a different mechanism. Fingers crossed that it can get the drill working.

Eric Mc

Original Poster:

121,770 posts

264 months

Tuesday 16th June 2015
quotequote all
And even then the drill will, literally, only scratch the surface. The source of the gases and dust that make up the coma comes from deep within the comet - way beyond where Philae's little drill will reach.

Philae is just the start of our understanding of at least comet one out of millions.

XM5ER

5,087 posts

247 months

Tuesday 16th June 2015
quotequote all
Eric Mc said:
The source of the gases and dust that make up the coma comes from deep within the comet -
Theoretically smile. You see how theories, become consensus, become fact.

Eric Mc

Original Poster:

121,770 posts

264 months

Tuesday 16th June 2015
quotequote all
Well - too deep for Philae's little drill.

MartG

20,619 posts

203 months

Friday 19th June 2015
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CrutyRammers

13,735 posts

197 months

Friday 19th June 2015
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XM5ER said:
Eric Mc said:
The source of the gases and dust that make up the coma comes from deep within the comet -
Theoretically smile. You see how theories, become consensus, become fact.
Hypotheses, strictly speaking wink

jmorgan

36,010 posts

283 months

Wednesday 12th August 2015
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Popped up in my email
http://www.jpl.nasa.gov/news/news.php?feature=4687...

Comet has a bottom burb.

IainT

10,040 posts

237 months

Thursday 13th August 2015
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jmorgan said:
Popped up in my email
http://www.jpl.nasa.gov/news/news.php?feature=4687...

Comet has a bottom burb.
Would a random event like this potentially change the trajectory of a comet like a thruster would? I wonder if it has any impact on calculations for the mission?

Eric Mc

Original Poster:

121,770 posts

264 months

Thursday 13th August 2015
quotequote all
I'm sure there must be some trajectory changes but they would be quite minor. Over time these changes will build up and alter the orbit of the comet. his is why comets can sometimes be a bit unpredictable.

Caruso

7,422 posts

255 months

Friday 14th August 2015
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Comet 67P has passed perihelion yesterday. It's now heading away from the sun with Rosetta still in orbit.

http://www.bbc.co.uk/news/science-environment-3388...

However surface activity may continue to increase. Just as the summer solstice is not the hottest part of summer, the comet's surface temperature lags behind the proximity to the sun.

MartG

20,619 posts

203 months

Thursday 1st September 2016
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Down to 2.6 km from the surface ( distance in the link is to the comet's centre )

https://planetgate.mps.mpg.de/Image_of_the_Day/pub...

durbster

10,223 posts

221 months

Thursday 1st September 2016
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Love this. Every photo blows my mind.

Now it's far enough from the sun that they're free of the crap coming off it they can get right in close - 2.5km is the closest so far isn't it?

Maybe this is something of a practice for the "landing" too.

essayer

9,008 posts

193 months

Monday 5th September 2016
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Eric Mc

Original Poster:

121,770 posts

264 months

Monday 5th September 2016
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Pretty amazing picture.

anonymous-user

53 months

Monday 5th September 2016
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Eric Mc said:
Pretty amazing picture.
It certainly is. I feel sorry for Philae, stranded on a big rock hurtling through space.

jammy_basturd

29,775 posts

211 months

Monday 5th September 2016
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garyhun said:
Eric Mc said:
Pretty amazing picture.
It certainly is. I feel sorry for Philae, stranded on a big rock hurtling through space.
One can empathise...

CrutyRammers

13,735 posts

197 months

Monday 5th September 2016
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Wow. Really glad they found it, looks like all of the deductions about where it ended up were correct, and it's always good to find out that your logic is working. Or not.

durbster

10,223 posts

221 months

Monday 5th September 2016
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WOW! clap

I never thought they'd find Philae. I half thought it might have been fired back into oblivion with all the activity during the sun pass smile

How unlucky to have ended up there though.

Pesty

42,655 posts

255 months

Monday 5th September 2016
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anonymous-user

53 months

Monday 5th September 2016
quotequote all
jammy_basturd said:
garyhun said:
Eric Mc said:
Pretty amazing picture.
It certainly is. I feel sorry for Philae, stranded on a big rock hurtling through space.
One can empathise...
I guess I should have added 'alone' smile