1830: "ISS Solar Transit 2"

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1830: "ISS Solar Transit 2"

Postby Soupspoon » Fri Apr 28, 2017 8:36 am UTC

Image
Title text: Most people don't realise it, but they actually launch a new space station every few weeks because this keeps happening.

Do they also have to relaunch the giant floating cross-hairs, configurable label text and trail-line? Or is that all made of the same stuff they make black boxes out of?

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Re: 1830: "ISS Solar Transit 2"

Postby rhomboidal » Fri Apr 28, 2017 8:41 am UTC

They seriously need to install a driver's side sun visor in the ISS. Spend ten bucks to save $150 billion.

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Re: 1830: "ISS Solar Transit 2"

Postby orthogon » Fri Apr 28, 2017 9:00 am UTC

If a space station crashes in space, and there's no air in which sound can propagate , does it make a comic-book "Fwoosh"?
xtifr wrote:... and orthogon merely sounds undecided.

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Re: 1830: "ISS Solar Transit 2"

Postby jc » Fri Apr 28, 2017 11:31 am UTC

orthogon wrote:If a space station crashes in space, and there's no air in which sound can propagate , does it make a comic-book "Fwoosh"?

If it's crashing into the sun, there's a LOT of atmosphere to carry sounds. But it's mostly hydrogen and helium, so the "Fwoosh" would be much higher pitched than here on Earth.

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Re: 1830: "ISS Solar Transit 2"

Postby somitomi » Fri Apr 28, 2017 11:47 am UTC

rhomboidal wrote:They seriously need to install a driver's side sun visor in the ISS. Spend ten bucks to save $150 billion.

Won't help in winter when the sun is low, but a pair of quality sunglasses could help.
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Re: 1830: "ISS Solar Transit 2"

Postby The Snide Sniper » Fri Apr 28, 2017 12:00 pm UTC

Alrighty then.

That was a thing that happened.
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Re: 1830: "ISS Solar Transit 2"

Postby Heimhenge » Fri Apr 28, 2017 2:12 pm UTC

somitomi wrote:
rhomboidal wrote:They seriously need to install a driver's side sun visor in the ISS. Spend ten bucks to save $150 billion.

Won't help in winter when the sun is low, but a pair of quality sunglasses could help.


Indeed, much like this ...

Image

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Re: 1830: "ISS Solar Transit 2"

Postby Velo Steve » Fri Apr 28, 2017 2:22 pm UTC

If they timed it right, they could just go through the hole.
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Re: 1830: "ISS Solar Transit 2"

Postby Quizatzhaderac » Fri Apr 28, 2017 6:51 pm UTC

somitomi wrote:
rhomboidal wrote:They seriously need to install a driver's side sun visor in the ISS. Spend ten bucks to save $150 billion.

Won't help in winter when the sun is low, but a pair of quality sunglasses could help.
Or, rather than putting glasses on everything else, we should just put them on the sun itself.

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Re: 1830: "ISS Solar Transit 2"

Postby RogueCynic » Fri Apr 28, 2017 7:07 pm UTC

Why don't they just go at night?
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Re: 1830: "ISS Solar Transit 2"

Postby teelo » Fri Apr 28, 2017 7:25 pm UTC

Yeah, everyone knows space is two dimensional.

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Re: 1830: "ISS Solar Transit 2"

Postby Soupspoon » Fri Apr 28, 2017 8:06 pm UTC

teelo wrote:Yeah, everyone knows space is two dimensional.

Yet another time-denier, I see!

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Re: 1830: "ISS Solar Transit 2"

Postby Old Bruce » Fri Apr 28, 2017 9:25 pm UTC

RogueCynic wrote:Why don't they just go at night?

<snark on>
And how are they going to see where they are going in the dark?
<snark off>

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Re: 1830: "ISS Solar Transit 2"

Postby Soupspoon » Fri Apr 28, 2017 9:30 pm UTC

Old Bruce wrote:
RogueCynic wrote:Why don't they just go at night?

<snark on>
And how are they going to see where they are going in the dark?
<snark off>

By the light of the silvery moon...

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Re: 1830: "ISS Solar Transit 2"

Postby Steve the Pocket » Sat Apr 29, 2017 12:46 am UTC

Sure hope there was at least a really noisy rock concert going on at the same time.

Actually, that brings up a good question: The point of Disaster Area's stuntship was to cause a huge solar flare that would be visible to the concert's audience. But would it really? I would imagine things the size of a small spacecraft accidentally fly into the sun all the time. Hell, things the size of a small spacecraft fly into the Earth all the time and just burn up in the atmosphere, and hardly anyone notices. I don't recall any mention of the ship containing any kind of explosives that would be set off in the impact.
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Re: 1830: "ISS Solar Transit 2"

Postby somitomi » Sat Apr 29, 2017 9:35 am UTC

Steve the Pocket wrote:Sure hope there was at least a really noisy rock concert going on at the same time.

Actually, that brings up a good question: The point of Disaster Area's stuntship was to cause a huge solar flare that would be visible to the concert's audience. But would it really? I would imagine things the size of a small spacecraft accidentally fly into the sun all the time. Hell, things the size of a small spacecraft fly into the Earth all the time and just burn up in the atmosphere, and hardly anyone notices. I don't recall any mention of the ship containing any kind of explosives that would be set off in the impact.

Maybe the ship itself is more explosive, than the dull hydrazine1-powered ones we're used to. It is extremely powerful after all. Besides, we're talking about a band, whose music caused a supervolcano-thing to erupt. I'd wager they know how to make a properly spectacular sundive.



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Re: 1830: "ISS Solar Transit 2"

Postby rmsgrey » Sun Apr 30, 2017 2:12 pm UTC

somitomi wrote:
Steve the Pocket wrote:Sure hope there was at least a really noisy rock concert going on at the same time.

Actually, that brings up a good question: The point of Disaster Area's stuntship was to cause a huge solar flare that would be visible to the concert's audience. But would it really? I would imagine things the size of a small spacecraft accidentally fly into the sun all the time. Hell, things the size of a small spacecraft fly into the Earth all the time and just burn up in the atmosphere, and hardly anyone notices. I don't recall any mention of the ship containing any kind of explosives that would be set off in the impact.

Maybe the ship itself is more explosive, than the dull hydrazine1-powered ones we're used to. It is extremely powerful after all. Besides, we're talking about a band, whose music caused a supervolcano-thing to erupt. I'd wager they know how to make a properly spectacular sundive.



1or whatever


Maybe the stuntship just has a powerful amp on the front?

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Re: 1830: "ISS Solar Transit 2"

Postby keldor » Sun Apr 30, 2017 5:40 pm UTC

rmsgrey wrote:
somitomi wrote:
Steve the Pocket wrote:Sure hope there was at least a really noisy rock concert going on at the same time.

Actually, that brings up a good question: The point of Disaster Area's stuntship was to cause a huge solar flare that would be visible to the concert's audience. But would it really? I would imagine things the size of a small spacecraft accidentally fly into the sun all the time. Hell, things the size of a small spacecraft fly into the Earth all the time and just burn up in the atmosphere, and hardly anyone notices. I don't recall any mention of the ship containing any kind of explosives that would be set off in the impact.

Maybe the ship itself is more explosive, than the dull hydrazine1-powered ones we're used to. It is extremely powerful after all. Besides, we're talking about a band, whose music caused a supervolcano-thing to erupt. I'd wager they know how to make a properly spectacular sundive.



1or whatever


Maybe the stuntship just has a powerful amp on the front?


It just has to be going really, really fast. If you get it going, say, 99.9999% the speed of light, maybe that would be enough?

That said, starting a solar flare takes an enormous amount of enengy, much less starting one big enough to see. Would our entire nuclear weapon arsenel do it? Not a chance. Crashing the Earth into the Sun? That might do it. Better add a few more 9's to that number up there. Now where to get the energy to accellerate it is another question.

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Re: 1830: "ISS Solar Transit 2"

Postby Soupspoon » Sun Apr 30, 2017 7:32 pm UTC

These are ships that are "ignore the speed of light" fast (to which the answer of "how do we go even faster" involves being everywhere at once in the universe for one improbable moment), whose futuretech is incomprehensible to a simple Earthman whilst often terribly zeerusted too. Pocket power packs that can maintain Marvin's morose momentum through three (or was it four?) lifespans of the universe seem to exist, and I'm sure that if one really wanted to make sure a specially commissioned ship imparted enough energy in a sun dive to create a solar flare then one wouldn't have to strain the engineering roadies' skills too much...

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Re: 1830: "ISS Solar Transit 2"

Postby rmsgrey » Sun Apr 30, 2017 10:50 pm UTC

Quick googling suggests noticeable solar flares run from 10^20 to 10^25 joules of energy. Throwing the Titanic around at six 9s of c would get you ~3*10^27 joules of kinetic energy (and ~3*10^21 of relativistic mass), so you're probably looking at slight overkill, provided enough of the energy gets dumped close enough to the surface - energy dumped too deep would have less predictable effects...

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Re: 1830: "ISS Solar Transit 2"

Postby SuicideJunkie » Mon May 01, 2017 4:52 pm UTC

Surely the ship isn't generating the flare like a mundane stage pyrotechnic charge, but triggers it. The point is to make a solar flare not a self destruct, right?

In order to make the flare go up promptly rather than take hours to visibly move, I'd have the ship play an awesome solo using the FTL drive as it reaches the surface.

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Re: 1830: "ISS Solar Transit 2"

Postby ebow » Mon May 01, 2017 8:37 pm UTC

rmsgrey wrote:Quick googling suggests noticeable solar flares run from 10^20 to 10^25 joules of energy. Throwing the Titanic around at six 9s of c would get you ~3*10^27 joules of kinetic energy (and ~3*10^21 of relativistic mass), so you're probably looking at slight overkill, provided enough of the energy gets dumped close enough to the surface - energy dumped too deep would have less predictable effects...


Sounds like a good What If? topic.

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Re: 1830: "ISS Solar Transit 2"

Postby Soupspoon » Mon May 01, 2017 10:55 pm UTC

So, how many giraffe's away would one have to place a Titanic to achieve this near-luminal velocity, assuming a Sol-type star in an inertially-identical frame of reference within an otherwise empty region of space?

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Re: 1830: "ISS Solar Transit 2"

Postby orthogon » Tue May 02, 2017 1:09 pm UTC

jc wrote:
orthogon wrote:If a space station crashes in space, and there's no air in which sound can propagate , does it make a comic-book "Fwoosh"?

If it's crashing into the sun, there's a LOT of atmosphere to carry sounds. But it's mostly hydrogen and helium, so the "Fwoosh" would be much higher pitched than here on Earth.

Is it fair to say that there's a "LOT of atmosphere"? The article on The Great Wiki is a bit annoying, only quoting densities for some layers and switching arbitrarily between g/m3, g/cm3 and particle density. However, from the photosphere out, all the layers that do have a density quoted are orders of magnitude less dense than air at sea level on Earth.
xtifr wrote:... and orthogon merely sounds undecided.

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Re: 1830: "ISS Solar Transit 2"

Postby rmsgrey » Tue May 02, 2017 9:31 pm UTC

Soupspoon wrote:So, how many giraffe's away would one have to place a Titanic to achieve this near-luminal velocity, assuming a Sol-type star in an inertially-identical frame of reference within an otherwise empty region of space?


The maximum velocity an infalling object starting from relative rest can attain is exactly equal and opposite to escape velocity...

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Re: 1830: "ISS Solar Transit 2"

Postby Soupspoon » Tue May 02, 2017 10:11 pm UTC

rmsgrey wrote:
Soupspoon wrote:So, how many giraffe's away would one have to place a Titanic to achieve this near-luminal velocity, assuming a Sol-type star in an inertially-identical frame of reference within an otherwise empty region of space?


The maximum velocity an infalling object starting from relative rest can attain is exactly equal and opposite to escape velocity...


Spoilsport. :P

I was going to suggest that if you're adding an (initially) arbitrary number of giraffes betwixt star and Titanic, the mass of the system can keep growing, even if it has a peculiarly suppressed density profile.


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