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Finding Massive Gas - The International Year of Astronomy
Posts
This is perfect. I could kiss him.
Theoretically. We are pretty sure that there is one. Then we get to see if there's a bow shock.
No, you're correct.
Venus is currently chilling out right near the moon.
no, you're right.
I thought it might be Mars for a little while but it was pretty yellow last night so that theory went out the window.
one night they looked just like this : )
the next they looked just like this ) :
When you first see it you're like hey this looks pretty neat then suddenly : )
Different bits of space in the interstellar medium are different temperatures.
Also, the damage to Apollo 13's service module:
You can see the tiger stripes in that image.
One amazing bit about that planet is like on Earth, the ice is shifting almost constantly. That moon is alive, and that's why you barely see any craters. It's constantly resurfacing itself.
There was or possibly still is a theory that Enceladus has a global ocean underneath, and that ocean is just completely covered in thick ice.
EDIT: CURSES! BEATEN!
Also, accidental alliteration.
i have no idea what you are talking, but it sounds awesome.
these would all make good nicknames for a condom
Basically, the interstellar medium is all the gas that makes up most of the space between stars. The stars, like our Sun, our pouring out particles, essentially charged plasma, called the Solar Wind. The solar wind pushes the gas outward, creating a bubble around the Sun.
Eventually, the pushing back of this interstellar gas slows the solar wind down below the speed of sound. This point is called the termination shock. Since it's lost so much energy by then, the interstellar medium has more of an effect past the termination shock, causing some cool shit to occur. This is called the Heliosheath. It's like an outer shell of our solar system.
Eventually, the ISM slows down the solar wind so much that it stops moving outward. This is the heliopause and is generally considered the edge of our solar system.
Of course, none of this takes into account the fact that our solar system is moving around our galaxy. The movement of the heliosphere around the ISM is causing a bow shock, like the wake of a boat moving through the water, essentially.
Most of this is theory only, because Voyager I and II are the first man made craft to get our there, and their sensors are really crap and almost dead.
This new probe will be able to map this stuff out and confirm our theories and give us more info about the edge of our solar system.
I was being vague because I don't actually know. It seems to be suggesting that the predicted velocities of particles in the ISM would represent certain temperatures in a fixed system, like in the solar system where the ambient radiation is somewhat fixed.
However apparently out there the ambient radiation is weaker and much more prone to fluctuation and so the quantum energy levels don't really meet up with those predictions.
I think what that really means is that shit's all over the place out there and they have no way of predicting what temperature anything would be from one place to the next.
This is basically the whole point of the deflector dish in star trek. Can you imagine getting pelted by interstellar dust going at relativistic speeds?
Also-
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yeah, that was awesome. (I live in PA, USA) I can never remember how many people are 'murrickans here
We are in such a tiny arm of the galaxy.
I can't tell you how awesome this is. It's so awesome.
I am all over that podcast