Amazing Pictures from Hubble
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Just wanted to make certain that the space enthusiasts here, saw the latest jaw dropping Hubble images: http://www.spacetelescope.org/images/html/heic0911c.html[^] http://www.spacetelescope.org/images/html/heic0911b.html[^] Just incredible stuff. (make certain you click on the images to enlarge them)
:..::. Douglas H. Troy ::..
Bad Astronomy |VCF|wxWidgets|WTLOh man, I love this stuff as much as the universe is not understood. I wish that when we die, God gives us a free ride through the universe.
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How do you think the vat-born offspring of such a species would feel, being brought up to know that they were cast adrift in space, never to know their parents or home planet, or if they even still existed? How would you protect a "laser sail" and its crew from collisions when running at 0.1c?
I hope you realise that hamsters are very creative when it comes to revenge. - Elaine
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low power forward firing lasers to ionize the ISM and a magnetic field to deflect the charged particles.
The latest nation. Procrastination.
Not much help if you meet one of these![^] At 0.1c even a pea-sized rock is going to do serious damage. 10g at 0.1c has a kinetic energy (0.5*m*v*v) of (thanks to Google): 0.5 x 0.01 kg x 0.1 * c x 0.1 * c = 4.49377589 × 1012 joules I wouldn't want to get in the way of it.
I hope you realise that hamsters are very creative when it comes to revenge. - Elaine
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Not much help if you meet one of these![^] At 0.1c even a pea-sized rock is going to do serious damage. 10g at 0.1c has a kinetic energy (0.5*m*v*v) of (thanks to Google): 0.5 x 0.01 kg x 0.1 * c x 0.1 * c = 4.49377589 × 1012 joules I wouldn't want to get in the way of it.
I hope you realise that hamsters are very creative when it comes to revenge. - Elaine
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Once the lasers convert them to plasma any gravel they run into can be defected as easily as single atoms. Larger objects would need to be dodged, but are correspondingly much easier to detect.
The latest nation. Procrastination.
My mistake, you said "low power lasers", I think you meant "lasers powerful enough to turn stone to plasma". Running those, and the magnetic deflectors, for decades if not millennia isn't going to come cheap...
I hope you realise that hamsters are very creative when it comes to revenge. - Elaine
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My mistake, you said "low power lasers", I think you meant "lasers powerful enough to turn stone to plasma". Running those, and the magnetic deflectors, for decades if not millennia isn't going to come cheap...
I hope you realise that hamsters are very creative when it comes to revenge. - Elaine
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Everything is relative. They are low power vs the amount of energy needed for the lasers at the launch site pushing the sail itself.
The latest nation. Procrastination.
But not inconsiderable in their own right. If they can turn stone to plasma, how does the craft avoid being vaporised by the much more powerful pushing laser?
I hope you realise that hamsters are very creative when it comes to revenge. - Elaine
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You wrote: it's so improbable that it has never happened anywhere and never will. A bit of nit picking: how does "so improbable that ... never will" differ from impossible? Impossible and improbable aren't the same thing either.
One has a finite but vanishingly small probability, one has a probability of zero.
I hope you realise that hamsters are very creative when it comes to revenge. - Elaine
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But not inconsiderable in their own right. If they can turn stone to plasma, how does the craft avoid being vaporised by the much more powerful pushing laser?
I hope you realise that hamsters are very creative when it comes to revenge. - Elaine
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Just wanted to make certain that the space enthusiasts here, saw the latest jaw dropping Hubble images: http://www.spacetelescope.org/images/html/heic0911c.html[^] http://www.spacetelescope.org/images/html/heic0911b.html[^] Just incredible stuff. (make certain you click on the images to enlarge them)
:..::. Douglas H. Troy ::..
Bad Astronomy |VCF|wxWidgets|WTLDouglas Troy wrote:
latest jaw dropping Hubble images
Possibly not everyone caught the Nova episode "Monster of the Milky Way". Back in my University days Black-Holes were somewhat conjectural. Nova sketches the techniques, including "adaptive optics" by which these astronomers were able to peer through the intervening dust in order to simply plot the orbits of stars circling our galaxy's core. These plots allow the central mass to be inferred, making a very straightforward proof of the Monster Black Hole.
pg--az
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Just wanted to make certain that the space enthusiasts here, saw the latest jaw dropping Hubble images: http://www.spacetelescope.org/images/html/heic0911c.html[^] http://www.spacetelescope.org/images/html/heic0911b.html[^] Just incredible stuff. (make certain you click on the images to enlarge them)
:..::. Douglas H. Troy ::..
Bad Astronomy |VCF|wxWidgets|WTL