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Author Topic: The SKY is falling
TheMoMan
BlabberMouth, a Blabber Odyssey
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Icon 1 posted November 08, 2013 15:56      Profile for TheMoMan         Edit/Delete Post   Reply With Quote 
A satellite that was mapping Earths gravity, ran out of fuel and is no longer maintaining Low Earth Orbit.

Space.com

We have until Sunday/Monday to party.

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Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety.


Benjamin Franklin,

Posts: 5836 | From: Just South of the Huron National Forest, in the water shed of the Rifle River | Registered: Sep 2002  |  IP: Logged
Ashitaka

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Icon 1 posted November 08, 2013 17:24      Profile for Ashitaka     Send New Private Message       Edit/Delete Post   Reply With Quote 
I always wonder who besides the engineers know how long these satalites will last.

What I mean:

This satalite lasted much longer than "expected".

I wonder if the engineers really couldn't know in space how quickly the satalite would use it's fuel or if they give a low number on how long it will last so if somethign goes wrong there is less disappointment.

SO many things in space seem to have been lately lasting much longer than "expected"

I wonder if some engineer knew this satalite would last this long or if the desingers are also surprised.

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"If they're not gonna make a distinction between Muslims and violent extremists, then why should I take the time to distinguish between decent, fearful white people and racists?"

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GrumpySteen

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Icon 1 posted November 09, 2013 01:24      Profile for GrumpySteen     Send New Private Message       Edit/Delete Post   Reply With Quote 
I'm sure they knew it was theoretically possible for it to last this long, but you don't quite figures that only have a 10% chance of being true when you're outlining a 350 million Euro project. The numbers given in the project would be the numbers that you're were 99% certain of.

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Worst. Celibate. Ever.

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dragonman97

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Icon 1 posted November 09, 2013 04:17      Profile for dragonman97   Author's Homepage     Send New Private Message       Edit/Delete Post   Reply With Quote 
s/expected/planned for/

As per Steen - you don't tell the EU Parliament (or whoever authorizes the ESA's budget) that you can run experiments for 3 years and then have the system fail after 18 months. If you can be damned sure it'll run for a year, and that's sufficient time to run your experiments, that's what you plan for and announce. If you can keep collecting data after the planned period - fantastic! (Mind you, you might not have the budget to staff Mission Control and the requisite scientists/analysts after your project 'finished.')

On a much more 'down to earth' note, I always take this into consideration when planning downtime. I can be 'quite certain' that a procedure will take 10-15 minutes, but I'll always ask for an hour or two. All the planning and testing can be done and something unexpected will still crop up and you need time to respond. If you ask for a 30 minute window and it takes 45 minutes, that's...not good.

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There are three things you can be sure of in life: Death, taxes, and reading about fake illnesses online...

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TheMoMan
BlabberMouth, a Blabber Odyssey
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Icon 1 posted November 11, 2013 12:07      Profile for TheMoMan         Edit/Delete Post   Reply With Quote 
Apparently after passing over the South Pole, it was losing enough speed that the ground controllers fired the steering rockets and then the satellite came down in the South Pacific.

I had my tracking software set up to see if I could catch some data, however it did not pass over my position.

Well now I have heard two stories, I was watching the pass over NE USA, knowing that next pass in 83 minutes would be damn near over head. no radio action on the frequency, Then I heard that it was steered East of Oz. & New Zeeland.

I have heard -60/-105 that would be in the Pacific, I have also heard -55/-60 that would be the Atlantic.

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Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety.


Benjamin Franklin,

Posts: 5836 | From: Just South of the Huron National Forest, in the water shed of the Rifle River | Registered: Sep 2002  |  IP: Logged
TheMoMan
BlabberMouth, a Blabber Odyssey
Member # 1659

Member Rated:
4
Icon 1 posted November 12, 2013 13:33      Profile for TheMoMan         Edit/Delete Post   Reply With Quote 
Well supposedly it was filmed from the Falkland Is.

BBC News

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Those who would give up essential liberty to purchase a little temporary safety deserve neither liberty nor safety.


Benjamin Franklin,

Posts: 5836 | From: Just South of the Huron National Forest, in the water shed of the Rifle River | Registered: Sep 2002  |  IP: Logged


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