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Off-Topic Discussion => General Discussion => Topic started by: FreeSpaceFreak on December 14, 2010, 04:06:42 am

Title: Humanity leaves the Solar System
Post by: FreeSpaceFreak on December 14, 2010, 04:06:42 am
Well, depending on your definition of "humanity"... Voyager 1 has reached the edge of Solar influence, and will venture into interstellar space soon. (http://www.bbc.co.uk/news/science-environment-11988466) It is likely to remain the single most distant man-made object for quite a while to come.
Amazingly, it's still sending back data; it takes the signal 16 hours to travel one-way now. NASA is doing a pretty good job with it :yes:
Title: Re: Humanity leaves the Solar System
Post by: Pred the Penguin on December 14, 2010, 04:22:34 am
How does it manage not to get.... hit?
Or is it just very improbable for something like that to happen?
Title: Re: Humanity leaves the Solar System
Post by: headdie on December 14, 2010, 04:39:14 am
Good stuff, It's nice to have an indication of where the edge of the system is and will be fascinating to see what voyager will encounter beyond the boundary.  I wonder how far away voyager will be able to go before we are unable to receive data from it?
Title: Re: Humanity leaves the Solar System
Post by: Androgeos Exeunt on December 14, 2010, 05:05:06 am
How does it manage not to get.... hit?
Or is it just very improbable for something like that to happen?

Maths and Science?
Title: Re: Humanity leaves the Solar System
Post by: Bobboau on December 14, 2010, 05:52:21 am
How does it manage not to get.... hit?
Or is it just very improbable for something like that to happen?
it's called space cause there's lots of it.
Title: Re: Humanity leaves the Solar System
Post by: Wobble73 on December 14, 2010, 07:00:20 am
How does it manage not to get.... hit?
Or is it just very improbable for something like that to happen?
it's called space cause there's lots of it.

Actually I'd imagine that it's getting hit all the time, just not by anything large enough to affect it. (Micro meteors, solar winds etc.)
Title: Re: Humanity leaves the Solar System
Post by: newman on December 14, 2010, 07:33:52 am
Yea, even if it was passing through a relatively dense asteroid fields, the distances between each asteroid are still vast, meaning it's chances of getting hit by something large enough to destroy or damage it aren't all that big. Asteroid fields don't exactly look like you see them in The Empire Strikes Back, there's still a lot more empty space than rocks out there, be it the Kuiper Belt or the Oort cloud..

I wonder how far away voyager will be able to go before we are unable to receive data from it?

Good question. IIRC it was estimated it will run out of enough power for the onboard instruments to operate some time before 2020. A more interesting question, I wonder if and when we'll ever overtake it - a 40,000 year wait for it to get to another star system sucks :)
Title: Re: Humanity leaves the Solar System
Post by: Grizzly on December 14, 2010, 07:45:45 am
Isn't Voyager 1 running on it's (weaker) backup transmitter after the primary one went down only very shortly after it's launch?
Title: Re: Humanity leaves the Solar System
Post by: Colonol Dekker on December 14, 2010, 08:50:13 am
One step closer to achieving its destiny as a bird of prey target.
Title: Re: Humanity leaves the Solar System
Post by: T-LoW on December 14, 2010, 09:12:01 am
And then they try again and again, and after some tries they launch Voyager 6 - and we all know what's gonna happen with it...
Title: Re: Humanity leaves the Solar System
Post by: Nuke on December 14, 2010, 09:21:25 am
How does it manage not to get.... hit?
Or is it just very improbable for something like that to happen?

put it this way, if you were standing on an asteroid in the asteroid belt, you would be pretty hard pressed to find other asteroids with the naked eye, most you would see would be a little dot the size of a pixel.

Isn't Voyager 1 running on it's (weaker) backup transmitter after the primary one went down only very shortly after it's launch?

wasnt that galileo?

Title: Re: Humanity leaves the Solar System
Post by: Topgun on December 14, 2010, 01:37:33 pm
Its still in the heliosphere.
Title: Re: Humanity leaves the Solar System
Post by: FUBAR-BDHR on December 14, 2010, 03:20:38 pm
This is one of those things that's been announced several times over the years.  I don't know if it's because they can only estimate, the boundary gets redefined, or what.  Really it's old news.
Title: Re: Humanity leaves the Solar System
Post by: Mobius on December 14, 2010, 03:25:40 pm
The booundaries also change depending on the Sun's activity, too.
Title: Re: Humanity leaves the Solar System
Post by: newman on December 14, 2010, 04:57:33 pm
The heliosphere's boundaries are next to impossible to define exactly. Space inside our solar system contains small amounts of dust and gas. Solar winds interact with that gas and the area inside which this happens is considered "under the sun's influence", and therefore inside our solar system. Of course, that area does change over time so the borders are vague to put it mildly. We might consider building a fence or something, because this is ridiculous.
Title: Re: Humanity leaves the Solar System
Post by: watsisname on December 14, 2010, 05:37:30 pm
I view it similarly to the problem of deciding where earth's atmosphere ends and space begins.  The fact is that there is no real boundary to space and even if you try to define it as some function of density of particles, that boundary will shift over time as the atmosphere fluctuates.

In short, calling it a boundary is stupid. :P
Title: Re: Humanity leaves the Solar System
Post by: Nuke on December 14, 2010, 06:40:14 pm
i say we call it a fuzz zone
Title: Re: Humanity leaves the Solar System
Post by: Topgun on December 14, 2010, 09:07:08 pm
i say we call it a fuzz zone
this. In fact, fuzz should be a scientific term.
Title: Re: Humanity leaves the Solar System
Post by: watsisname on December 14, 2010, 10:37:45 pm
Galaxies and nebulae are just fuzzy objects in my book.
Title: Re: Humanity leaves the Solar System
Post by: Colonol Dekker on December 15, 2010, 07:02:39 am
Nebulae are giant space farts.
Title: Re: Humanity leaves the Solar System
Post by: Herra Tohtori on December 15, 2010, 03:28:43 pm
fuzz should be a scientific term.


It is a scientific term (http://en.wikipedia.org/wiki/Fuzzy_logic).