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Voyager 1 stops communicating with Earth

cnn.com

121–130 of 649 posts

Re: Voyager 1 stops communicating with Earth

#122

> Initially designed to last five years NASA tech often seems to outlive its initial mission length by a massive margin. The Mars rovers spring to mind. It's incredibly impressive, and almost embarrassing! Surely this isn't accidental. Is the kit massively over-specced? Do the uncertainties and risks necessitate such a depth of redundancy that when stuff goes kinda smoothly the thing lasts 9 times longer than it was…

If you design so that it has a 99.9999% chance of working for 5 years it's going to work for much longer. It'd be very hard to design it in a way that it didn't.

Would it be cheaper/equally effective to go for one less decimal place and make 10 of them?

Re: Voyager 1 stops communicating with Earth

#123
post #95

I find it interesting how they use “aging spacecraft” and “exceptionally long lifespans” of these devices. In terms of the age of the universe, or the time that light from a star has travelled to us, it’s minute. Aging in relation to human life maybe.

In terms of expected mission duration and the durability of its components.

Re: Voyager 1 stops communicating with Earth

#124
post #113

LOL @ CNN blocking Firefox! "Browser Blocked We apologize, but your web browser is configured in such a way that it is preventing this site from implementing required components that protect your privacy and allow you to view and change your privacy settings. This functionality is required for privacy legislation in your region. We recommend you use a different browser or disable the “EasyList Cookie” filter from you…

I suspect you're using some plugin that's blocking cookies (whether they correctly detect that as EasyList or not). Due to that, it's possible that CNN can't store your response to their privacy popup and so they have decided to limit their liability by preventing access. If this turns out true, it would be quite ironic: they can't show you a legally mandated cookie selector intended to increase your privacy because…

I guess that means they have to break reader mode as well.

Re: Voyager 1 stops communicating with Earth

#125

> Initially designed to last five years NASA tech often seems to outlive its initial mission length by a massive margin. The Mars rovers spring to mind. It's incredibly impressive, and almost embarrassing! Surely this isn't accidental. Is the kit massively over-specced? Do the uncertainties and risks necessitate such a depth of redundancy that when stuff goes kinda smoothly the thing lasts 9 times longer than it was…

Based on some JPL documentary videos, I recall the engineers involved intentionally over-specced the components on the hopes that the mission would be later extended to go further out into the solar system. Check out the JPL channel on YouTube. There is a video series about the different missions throughout NASA history. Its really worthwhile watching.

https://www.youtube.com/playlist?list=PLTiv_XWHnOZqFnWQs393R...

Re: Voyager 1 stops communicating with Earth

#126
post #113

LOL @ CNN blocking Firefox! "Browser Blocked We apologize, but your web browser is configured in such a way that it is preventing this site from implementing required components that protect your privacy and allow you to view and change your privacy settings. This functionality is required for privacy legislation in your region. We recommend you use a different browser or disable the “EasyList Cookie” filter from you…

I suspect you're using some plugin that's blocking cookies (whether they correctly detect that as EasyList or not). Due to that, it's possible that CNN can't store your response to their privacy popup and so they have decided to limit their liability by preventing access. If this turns out true, it would be quite ironic: they can't show you a legally mandated cookie selector intended to increase your privacy because…

The opt-in is only required if they collect your information. If they take the default as opt-out then they don't have to show you any prompt and have no liability.

Re: Voyager 1 stops communicating with Earth

#127
post #124
post #113

Earlier quoted context omitted.

I suspect you're using some plugin that's blocking cookies (whether they correctly detect that as EasyList or not). Due to that, it's possible that CNN can't store your response to their privacy popup and so they have decided to limit their liability by preventing access. If this turns out true, it would be quite ironic: they can't show you a legally mandated cookie selector intended to increase your privacy because…

I guess that means they have to break reader mode as well.

Not necessarily. If reader mode skips their ads, they'd probably be in the clear.

Re: Voyager 1 stops communicating with Earth

#128

Earlier quoted context omitted.

If you design so that it has a 99.9999% chance of working for 5 years it's going to work for much longer. It'd be very hard to design it in a way that it didn't.

Would it be cheaper/equally effective to go for one less decimal place and make 10 of them?

Probably all of them would die for the same reason fast

Re: Voyager 1 stops communicating with Earth

#129

> Initially designed to last five years NASA tech often seems to outlive its initial mission length by a massive margin. The Mars rovers spring to mind. It's incredibly impressive, and almost embarrassing! Surely this isn't accidental. Is the kit massively over-specced? Do the uncertainties and risks necessitate such a depth of redundancy that when stuff goes kinda smoothly the thing lasts 9 times longer than it was…

If you design so that it has a 99.9999% chance of working for 5 years it's going to work for much longer. It'd be very hard to design it in a way that it didn't.

And even if you design everything so it has a 75% chance of working for 5 years, some of the things won't last 5 years, but you'll still only hear about and remember the ones that work for much longer.

Re: Voyager 1 stops communicating with Earth

#130

Earlier quoted context omitted.

If you design so that it has a 99.9999% chance of working for 5 years it's going to work for much longer. It'd be very hard to design it in a way that it didn't.

Would it be cheaper/equally effective to go for one less decimal place and make 10 of them?

Given the costs of launching, almost assuredly not.
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