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-   -   Rosetta comet landing due today (https://www.cableforum.uk/board/showthread.php?t=33699328)

Ignitionnet 12-11-2014 08:10

Rosetta comet landing due today
 
Website

European and indeed international co-operation at its finest - with the aim of expanding the horizon of human knowledge.

Chris 12-11-2014 08:13

Re: Rosetta comet landing due today
 
Philae is loose ... happy landings.

joglynne 12-11-2014 12:11

Re: Rosetta comet landing due today
 
Really looking forward to the landing. Should be at around 4pm I understand.

dilli-theclaw 12-11-2014 12:17

Re: Rosetta comet landing due today
 
It's looking good. I hope they sort the thruster problem out or I can see it bouncing off the asteroid.

qasdfdsaq 12-11-2014 12:18

Re: Rosetta comet landing due today
 
Yeah, been anticipating this with excitement for a week. Not read up on the ******** yet but I hope it's not too bad, or else it's another 5 years or more journey till they get to try again...

Pauls9 12-11-2014 13:33

Re: Rosetta comet landing due today
 
Watching the broadcast:

http://play.reuters.miisolutions.net...713c714fdce9ef

qasdfdsaq 12-11-2014 14:01

Re: Rosetta comet landing due today
 
Watching the real broadcast:

http://new.livestream.com/ESA/cometlanding

Cobbydaler 12-11-2014 15:06

Re: Rosetta comet landing due today
 
Webcast froze here just as they started to celebrate!

qasdfdsaq 12-11-2014 15:12

Re: Rosetta comet landing due today
 
Good job too, I forgot about it and alt-tabbed back right on time to see the start of those celebrations.

joglynne 12-11-2014 16:28

Re: Rosetta comet landing due today
 
17:09

Quote:

Concerns lander may have bounced off comet

Scientists at the European Space Agency say they have concerns over the fate of the Philae Lander.

As the anchors did not fire they cannot say "with 100% certainty that we are on the comet and are staying there." They are observing the movement of the lander to confirm it is stationary on the comet rather than "still in movement."
http://www.itv.com/news/story/2014-1...comet-landing/

techguyone 12-11-2014 16:30

Re: Rosetta comet landing due today
 
Something has always puzzled me, with comets. They're essentially asteroids that get close to the sun, close enough for some material to melt and leave a streaming 'tail' that makes it very visible. If this is the case, each pass must make it lose mass, you'd think after seeing some comet tails that are very long and presumably containing lots of material that after a few passes there wouldn't be any mass left?

qasdfdsaq 12-11-2014 16:47

Re: Rosetta comet landing due today
 
Yes, they do do that, but their tails are also very un-dense and their mass is huge. Remember this thing is 4km across, the diameter size of a medium size city and heavy enough to have sufficient gravity for a spaceship to orbit it.

alanbjames 12-11-2014 17:52

Re: Rosetta comet landing due today
 
It states its an ESA landing. I hope the DWP doesn't find out who worked on it cos they will lose their benefits :-D

Hom3r 12-11-2014 18:08

Re: Rosetta comet landing due today
 
I read the landing was throwing a hammer from London and hitting a nail in India.

qasdfdsaq 12-11-2014 19:43

Re: Rosetta comet landing due today
 
Nonsense as usual. That'd be vaguely accurate only if India was the size of the moon and the nail was the size of Europe. Hitting something 4km wide from 30km away is no harder than hitting a bookshelf from the other side of the room, and that bookshelf had a gravity well that sucked everything towards it nomatter where you aimed.

Fact is they don't even have a clue where it landed, they've already lost the damn thing.

Hugh 12-11-2014 19:57

Re: Rosetta comet landing due today
 
Quote:

Originally Posted by qasdfdsaq (Post 35740634)
Nonsense as usual. That'd be vaguely accurate only if India was the size of the moon and the nail was the size of Europe. Hitting something 4km wide from 30km away is no harder than hitting a bookshelf from the other side of the room, and that bookshelf had a gravity well that sucked everything towards it nomatter where you aimed.

Fact is they don't even have a clue where it landed, they've already lost the damn thing.

Not sure if a 4Km comet has a deep gravity well, and tbf, the Rosetta spacecraft has travelled 6 billion Km to match orbits/velocity with something traveling at 65,000 KpH - probably a bit more difficult hitting a bookshelf from across the room (unless your room is 40 AU wide, and you used your bed and wardrobe to provide slingshot manoeuvres.... ;))

qasdfdsaq 13-11-2014 01:09

Re: Rosetta comet landing due today
 
It's got a big enough gravity well for Rosetta to have been orbiting it for the last few months :)

Sure, getting there, from Earth, was a long journey. Being dropped from 30km up and hitting a 4km target that inherently draws everything towards it, isn't a particularly impressive achievement. Coupled with the fact that all three retention mechanisms that were meant to hold the thing down on touchdown failed to operate, and the fact they don't know if they actually hit their target because they can't actually locate where it went... the only thing that'd make the landing impressive is if the lander's odd behavior was because it had been abducted by aliens.

Given there's dozens of computer game plugins that can do it at a click of a button, the math behind getting something from A to B in space is actually quite simple. The hard part is building and launching hardware advanced enough and reliable enough to do it, and to be fair, all the important hardware failed today so er... meh.

Chris 13-11-2014 08:21

Re: Rosetta comet landing due today
 
Looks like it really is on the surface now, although it may have bounced up to 100 metres back upwards after its first touchdown.

http://www.bbc.co.uk/news/science-environment-30034060

qasdfdsaq 13-11-2014 10:51

Re: Rosetta comet landing due today
 
Nah, it bounced twice. First bounce sent it over a kilometre up and it flipped around for a good two hours before the second bounce that was around 100m and 7 minutes long.

Apparently it's now stuck on it's side in a cave and about to die:

http://www.dailymail.co.uk/sciencete...bled-side.html

Cobbydaler 15-11-2014 18:26

Re: Rosetta comet landing due today
 
Gone into sleep mode after sending back it's latest burst of data

http://www.bbc.co.uk/news/science-environment-30058176

Derek 14-06-2015 12:38

Re: Rosetta comet landing due today
 
It's alive!

http://www.bbc.co.uk/news/science-environment-33126885

Quote:

The European Space Agency (Esa) says its comet lander, Philae, has woken up and contacted Earth.
Philae, the first spacecraft to land on a comet, was dropped on to the surface of Comet 67P by its mothership, Rosetta, last November.

Hugh 14-06-2015 17:26

Re: Rosetta comet landing due today
 
First Contact? ;)

qasdfdsaq 15-06-2015 01:56

Re: Rosetta comet landing due today
 
A whole 85 seconds of connectivity during 6 months.

That level of uptime makes even VM's reliability look spectacular :-P

Hugh 15-06-2015 07:42

Re: Rosetta comet landing due today
 
I think, if we reflect on many SF books and films, when a robot is re-activated after a period of time without human intervention, this scenario never ends well......

qasdfdsaq 15-06-2015 13:51

Re: Rosetta comet landing due today
 
Quote:

Originally Posted by Hugh (Post 35783069)
I think, if we reflect on many SF books and films, when a robot is re-activated after a period of time without human intervention, this scenario never ends well......

Hah! Thankfully this robot has no engines and can barely move its legs.

Osem 16-06-2015 17:44

Re: Rosetta comet landing due today
 
Maybe cosmic radiation will cause it to mutate and return to Earth to wreak terrible revenge on its creators... :erm:

:)


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