COMET LANDING- Europe set to make space history today!!

[Levina]

one-way?? cannot be...

Oh I found that on a blog...but 28mins seems to be a better answer.
Explainer: Why Rosetta Comet Mission is Such a Big Deal | IFLScience
Okay because mars to earth takes around 13mins and since 67p is between jupiter and Mars it should be around 28mins.Is that fine now??

 

[jamahir]

Is that fine now??

are you angry??

 

[Levina]

are you angry??

you cant provoke me enough...I bet. Lol

 

[mike2000]

Wow......well done Rosetta. The E.U becomes the first region/agency on earth to have successfully landed on a comet. Hope many more breakthrough/first to come. We ahould do things others havent done before, repeating what others have done already is nithing really exciting challenging. Keep it up ESA, hope to see more such missions in future.

 

[jamahir]

Wow......well done Rosetta. The E.U becomes the first region/agency on earth to have successfully landed on a comet. Hope many more breakthrough/first to come. We ahould do things others havent done before, repeating what others have done already is nithing really exciting challenging. Keep it up ESA, hope to see more such missions in future.

congratulations to you and esa... a fine project indeed... but i must say that future is projects like "mars one"... transnational projects... though there is still ten years to that...

 

[Nova2]

the "solar shield" looks nice... but is it opaque or semi-opaque ( like the special plastic used for viewing solar eclipse?

I guess it would be opaque as the material is made up of RCC which has been used in space shuttle aswell as seen in this pic..
http://upload.wikimedia.org/wikipedia/commons/thumb/9/95/Impact-test.jpg/800px-Impact-test.jpg

But @jamahir Philae cannot send its data to Earth directly ..it must do it via Rosetta.And that might take 2 hrs.

And its 800million kms from earth if i am not mistaken ,so even if data was sent at speed of light i would take take 42.6sec

 

[jamahir]

And its 800million kms from earth if i am not mistaken ,so even if data was sent at speed of light i would take take 42.6sec

don't radio waves travel at speed of light?? besides...

Earth-Mars 55 - 378 million km 3 - 21 minutes
Earth-Jupiter 590 - 970 million km 33 - 53 minutes
Earth-Pluto ~5800 million km 5 hours
Earth-Nearest Star ~9.5 million million km 4 years

source - Communication Delay

 

[Nova2]

don't radio waves travel at speed of light?? besides...


source - Communication Delay

Yes they do travel at speed of light,though i was confused with something i have read a while ago. Anyways communication delays could be because of the quipments at both ends.

 

[Nova2]

source - Communication Delay

Thanks for this ,it reminded me that i have confused tachyon with radio waves not moving at speed of light,my bad

 

[jamahir]

Anyways communication delays could be because of the quipments at both ends.

true... because the link capacity is space networking is generally kilobits/second... and image file sizes are large... so, data transmission and possible retransmission will take more time than sending a simple telemetry data packet.

Thanks for this ,it reminded me that i have confused tachyon with radio waves not moving at speed of light,my bad

that reminds me... i am interested in the supposed particle... "neutrino"... which is said to have no mass and so can pass through most matter... something like that... i don't know if a single neutrino has been detected yet... but the concept made qnx company to name their operating system's version 6 as "qnx neutrino"... qnx os is the world's best os...

 

[jamahir]

@levina @Nova2 @OrionHunter @JonAsad

a very interesting page i found some years ago... ( Soviet Space Cameras )... it is mainly about old-times space cameras but look at this...

The high-quality transmission rate was 90 pixels per second, requiring about 6 hours to send a 1440×1440 image.

 

[Levina]

@levina @Nova2 @OrionHunter @JonAsad

a very interesting page i found some years ago... ( Soviet Space Cameras )... it is mainly about old-times space cameras but look at this...

Hey thanks!!!
I 've a feeling that Russians 're gonna be the next Germans. These cameras look so much more advanced.
Soviets were way ahead of Americans in the 70s when it came to space technology...I'd read it somewhere that soviets had better they had better docking devices and also that their space suits were made of better material.Infact there's an interesting story behind it...read it here

 

[jamahir]

Hey thanks!!!
I 've a feeling that Russians 're gonna be the next Germans. These cameras look so much more advanced.
Soviets were way ahead of Americans in the 70s when it came to space technology...I'd read it somewhere that soviets had better they had better docking devices and also that their space suits were made of better material.Infact there's an interesting story behind it...read it here

thanks for the link... i will read later in the night.

indeed... the soviets were quite advanced in space operations... they were the first ones to build and operate space stations... the russians and cis people are the most experienced in space...

only spacex is more advanced than the russians/cis.

and you are right about the spacesuits... i think the soviets were more concerned about suit safety than the americans... nasa always tends to be over-dramatic... and maybe you know of this story about failure of western designed spacesuit... it happened in 2013... ( Italian Astronaut Recounts Near-Drowning in Spacesuit (Video) )...

"At that moment, as I turn 'upside-down,' two things happen: the sun sets, and my ability to see — already compromised by the water — completely vanishes, making my eyes useless"

 

[xenon54 out]

Really a historic moment, hope to see new knowledge about comets in Space documentaries in the next couple years, good thing i almost only watch Discover Channel and National Geographic.

 

[Audio]

@Audio

Seems like things didn't go according to plans. The failure of the thruster that was supposed to ensure the lander doesn't bounce off caused all kinds of problems now, from the lack of exposure to Sun, for solar cells to recharge, to the fear that drilling might produce a reaction that will propel the lander back up again.
It's like Murphy's law in action, thruster failed, harpoon failed and drills on the legs apparently haven't drilled anything to anchor it.
We'll see in the next few days what happens....