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Rosetta, Philae and Comet 67P/Churyumov-Gerasimenko.


Vicomt
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8 hours ago, sgt_flyer said:

very cool if philae managed to wake up :) 

searched abit, only things i've found found 3 tweets (and the article) from http://www.tiedetuubi.fi/ talking about it - the rest were retweets talking about this source for now. (guess that's the same media you told aboit Fridaspace :)

Yes that was the same website I was talking about :)

6 hours ago, fredinno said:

Rosetta was supposed to die in this month. Did any of those plans change?

Rosetta will die of lack of power in September 2016. Current plan is to crash-land it on the surface.

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a russian media wrote about philae, but from a read through google trad it seems it's only sourcing the previous finnish info.

as the russian media told, ESA has yet to make an official statement about it.

http://www.3dnews.ru/925688

 

edit : here's a reddit post with someone doing more accurate translations - https://www.reddit.com/r/space/comments/3xtu76/comet_lander_philae_still_alive_ten_seconds_of/

 

from what they told, ESA's media relations confirmed Rosetta received telemetry packets on the same frequency used by philae, but seems those packet don't contain useful data - so they are renewing rosetta's listening efforts for now, and are doublechecking if anything else could have used a similar frequency.

 

(they also told that philae would try to send something only if he receives at least one valid packet from rosetta)

Edited by sgt_flyer
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  • 2 weeks later...

So, ESA hasn't yet confirmed the Finnish report of a contact from Philae on December 22nd. This said, the mission's PR team has been on holiday since December 18th and should be back tomorrow (January 4th). However, they said that if anything amazing happened, they would have updated us even on holiday. But apparently that didn't happen. Not sure what's going on, but tomorrow we should know for sure.

Either way, around Christmas Day Rosetta seems to have lowered itself from 95-100 km to 75-80 km. I got this by comparing the distances at which the OSIRIS images were taken, but I couldn't find any confirmation or even any rumor of the manoeuvre. However, it is interesting to notice that this potential lowering manouvre would have happened three or four days after the potential contact from Philae, so it would be plausible. But again, it's all speculation :)

Just to write something useful, here is an OSIRIS image of 67P on Dec 31st:

NAC_2015-12-31T21.56.49.687Z_ID10_139754

Edited by Frida Space
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  • 1 month later...
45 minutes ago, RainDreamer said:

The mission is coming to an end soon, with Rosetta making a final controlled impact into the comet, and Philae going to sleep mode forever.

RIP Philae, may we find you again after humanity became interstellar.

Philae will after a few more passes of the comet become a circum solar satellite.

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  • 3 months later...
  • 1 month later...

So, we now have a few details regarding Rosetta's landing on comet 67P.

Who? ESA's Rosetta mission

What? Rosetta will soon land on the surface of comet 67P, similarly to what Philae did in Nov. 2014

When? Touchdown will occur at 10:30 UT on Sept. 30, 2016

Where? Ma'at region, on 67P's smaller lobe

Why? Having reached perihelion in August last year, 67P is now getting further and further away from the Sun, so much so that Rosetta's old solar panels soon won't be able to power the spacecraft anymore

How? Rosetta doesn't have any harpoons or anchoring mechanism, but it will touchdown very gently - around 0.5 m/s.

ESA_Rosetta_Final_Destination_30092016-1

Edited by Frida Space
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  • 1 month later...

Just look how incredibly unfortunate that is. First, Philae only bounced because both of its redundant "stick to the surface" systems decided to fail at the same time. Then, it managed to randomly drift into one of the most craggy places on the entire comet after its bounce. Then, even in that place there were only a select few really pronounced cliff overhangs, and it managed to randomly wedge itself right into one of the largest. The chance for that chain of events to happen must have been beyond miniscule.

Screw you Murphy, screw you and the comet you rode in on! :P

Edited by Streetwind
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4 hours ago, Streetwind said:

Just look how incredibly unfortunate that is. First, Philae only bounced because both of its redundant "stick to the surface" systems decided to fail at the same time. Then, it managed to randomly drift into one of the most craggy places on the entire comet after its bounce. Then, even in that place there were only a select few really pronounced cliff overhangs, and it managed to randomly wedge itself right into one of the largest. The chance for that chain of events to happen must have been beyond miniscule.

Screw you Murphy, screw you and the comet you rode in on! :P

It might be more than pure coincidence. It's possible the jagged terrain and pronounced cliff overhangs helped to "catch" Philae and prevent it from "bouncing" further. 

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