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Think of a neutron star as a gigantic atom. The density of it is the same as the density of the nucleolus of an atom. View Quote View All Quotes View All Quotes Quoted:
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our sun compared to blue supergiant http://svs.gsfc.nasa.gov/vis/a010000/a011200/a011250/Sun-Star_Scale_FINAL_1080_Unlabeled.jpg http://svs.gsfc.nasa.gov/vis/a010000/a011200/a011250/Sun-Star_Scale_FINAL_1080_Unlabeled.jpg Neutron Stars scroll all the way down At these incredibly high densities, you could cram all of humanity into a volume the size of a sugar cube. http://www.astro.umd.edu/~miller/ns.gif Think of a neutron star as a gigantic atom. The density of it is the same as the density of the nucleolus of an atom. And it may even be denser than that... The theories about what is possible in their codes are pretty awesome... Quark stars, degenerate matter, strange matter.. Matter at its densest.. |
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Wait, so is something moving faster than the speed of light here? Any further reading material on this? View Quote View All Quotes View All Quotes Quoted:
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Everyone knows that the edge of the observable universe is 14 billion light years away give or take a little right? Wrong. The light we see from the edge is that far away. Because the space between here and there has been expanding while the light in transit for 14 billion years the objects we are seeing at the edge are now about 47 billion light years away. http://i743.photobucket.com/albums/xx80/TheChaos0/mind-blown-2.gif Wait, so is something moving faster than the speed of light here? Any further reading material on this? Relativity. Speed of light is relative to the media it's traveling through. It's just the space between us and the light is expanding and when you add up the tremendous distances, it's a whole lot of speed. For more reading, look up general and special relativity. |
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Relativity. Speed of light is relative to the media it's traveling through. It's just the space between us and the light is expanding and when you add up the tremendous distances, it's a whole lot of speed. For more reading, look up general and special relativity. View Quote View All Quotes View All Quotes Quoted:
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Everyone knows that the edge of the observable universe is 14 billion light years away give or take a little right? Wrong. The light we see from the edge is that far away. Because the space between here and there has been expanding while the light in transit for 14 billion years the objects we are seeing at the edge are now about 47 billion light years away. http://i743.photobucket.com/albums/xx80/TheChaos0/mind-blown-2.gif Wait, so is something moving faster than the speed of light here? Any further reading material on this? Relativity. Speed of light is relative to the media it's traveling through. It's just the space between us and the light is expanding and when you add up the tremendous distances, it's a whole lot of speed. For more reading, look up general and special relativity. The Destiny will get there someday, and seed those galaxies with stargates. |
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What you might see if you were to cross the event horizon of a black hole https://www.youtube.com/watch?v=eI9CvipHl_c View Quote Always liked that video. Would be cool to see something like that reproduced with the more accurate visual model of of a black hole we know today |
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My 8 year old daughter just asked me if there is a planet with dragons... I showed her the Andromada image and let her see for herself that by the numbers... There most likely is a dragon planet... She is super excited... View Quote Get her C.S.Lewis' trilogy (Out of the Silent Planet; Perelandra; That Hideous Strength) |
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Quoted: They are thought to be something called Graben caused by an impact. http://upload.wikimedia.org/wikipedia/commons/thumb/e/e3/Fault-Horst-Graben.svg/534px-Fault-Horst-Graben.svg.png View Quote View All Quotes View All Quotes Quoted: Quoted: Quoted: There is currently a NASA probe exploring the asteroid belt between Mars and Jupiter. This mission has already visited a large asteroid named vesta. http://upload.wikimedia.org/wikipedia/commons/f/ff/Vesta_Rotation.gif Why does that thing have ridge lines going all the way around it? http://upload.wikimedia.org/wikipedia/commons/thumb/e/e3/Fault-Horst-Graben.svg/534px-Fault-Horst-Graben.svg.png Why? Because my professor said "If you are having trouble keeping them straight, remember, you can ride a Horst but you can't ride a Graben". |
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Bill Nye's Light Sail spacecraft has loss touch with earth. Amateurs, they didn't even design an interrupt reset. "Hoping" for a reset due to a random charged particle is not a plan. |
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Interesting to note Nye's craft was not the first to use 'solar sailing', that honor goes to MESSENGER.
From my friend on the MESSENGER team: The MESSENGER Mission (go JHU/APL!) was the first spacecraft to operationally use solar sailing. Solar pressure increases to the square of the distance to the sun, so solar sailing made sense for a mission to Mercury. Saved quite a bit of propellant and reduced a bunch or risk. Dan O'Shaugnessy won the Heinlein Award for this. Very nice piece of work and well deserved. Extended abstract. MESSENGER's use of Solar Sailing abstract View Quote |
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A pretty good image gallery I found: http://www.ipac.caltech.edu/2mass/gallery/
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If you look closely at the full res version of this pic you can see the earth and the moon from the curiosity rover.
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Was clear enough last night to see 4 moons and 2 dark bands on Jupiter with a 60x spotting scope... Couldn't get a good pic tho..
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View Quote Attach it to your rear bumper? Would be great for tailgaters. |
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<a href="http://s207.photobucket.com/user/mdar15manager/media/SolarSail_zpsdaxbu5sw.jpg.html" target="_blank">http://i207.photobucket.com/albums/bb277/mdar15manager/SolarSail_zpsdaxbu5sw.jpg</a> Bill Nye's Light Sail spacecraft has loss touch with earth. Amateurs, they didn't even design an interrupt reset. "Hoping" for a reset due to a random charged particle is not a plan. View Quote I don't understand why these things wouldn't have an automatic reset/reboot built in so that every, say, 30 days the computer does an uncommanded reset. Have it so that an interrupt signal would have to be received from Earth to keep the restart from happening. Everything cool? Great, just send the restart interrupt signal. Can't get a signal? Auto reset proceeds at scheduled time. |
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I don't understand why these things wouldn't have an automatic reset/reboot built in so that every, say, 30 days the computer does an uncommanded reset. Have it so that an interrupt signal would have to be received from Earth to keep the restart from happening. Everything cool? Great, just send the restart interrupt signal. Can't get a signal? Auto reset proceeds at scheduled time. View Quote That's what makes me think it was amateurs that built this bird. On one craft I worked on we had a timer interrupt perform a reset. If the timer was not reset periodically by the OS it was assumed it was stuck in a loop somewhere and the timer would count down and reset the bird. The communications systems also had a type of interrupt only if there was no communications on the high speed band it assumed a problem and would automatically switch over to the low speed band & antenna and try again. These are very basic ideas when building robotic devices that will operate where nobody can walk over and push a button or pull the battery - maybe Bill should go back to TV and leave the engineering to the engineers. |
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Quoted: That's what makes me think it was amateurs that built this bird. On one craft I worked on we had a timer interrupt perform a reset. If the timer was not reset periodically by the OS it was assumed it was stuck in a loop somewhere and the timer would count down and reset the bird. The communications systems also had a type of interrupt only if there was no communications on the high speed band it assumed a problem and would automatically switch over to the low speed band & antenna and try again. These are very basic ideas when building robotic devices that will operate where nobody can walk over and push a button or pull the battery - maybe Bill should go back to TV and leave the engineering to the engineers. View Quote View All Quotes View All Quotes Quoted: Quoted: I don't understand why these things wouldn't have an automatic reset/reboot built in so that every, say, 30 days the computer does an uncommanded reset. Have it so that an interrupt signal would have to be received from Earth to keep the restart from happening. Everything cool? Great, just send the restart interrupt signal. Can't get a signal? Auto reset proceeds at scheduled time. That's what makes me think it was amateurs that built this bird. On one craft I worked on we had a timer interrupt perform a reset. If the timer was not reset periodically by the OS it was assumed it was stuck in a loop somewhere and the timer would count down and reset the bird. The communications systems also had a type of interrupt only if there was no communications on the high speed band it assumed a problem and would automatically switch over to the low speed band & antenna and try again. These are very basic ideas when building robotic devices that will operate where nobody can walk over and push a button or pull the battery - maybe Bill should go back to TV and leave the engineering to the engineers. |
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Apparently a red dwarf star was recently discovered that passed 0.8 lightyears from the sun 70,000 years ago. That is close enough to technically be within our solar system: http://www.universetoday.com/119038/a-star-passed-through-the-solar-system-just-70000-years-ago/ http://i0.wp.com/www.universetoday.com/wp-content/uploads/2015/02/Scholzs-and-the-OortCloud.jpg View Quote And the statistical likelihood of that, even over a 500,000 years, are minuscule. ...even when Andromeda collides with the Milky Way, the odds are that our solar system won't be impacted at all (other than having previously been baked by Sol). Loving this thread. |
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We'er getting closer: http://pluto.jhuapl.edu/Multimedia/Science-Photos/pics/NH_COMP_V4_sets.003.jpg View Quote I was downstairs waiting for one of the shuttle busses. On the displays that let you know when the next bus arrives they added a clock for New Horizons. For a web clock and more info go here |
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I was downstairs waiting for one of the shuttle busses. On the displays that let you know when the next bus arrives they added a clock for New Horizons. <a href="http://s207.photobucket.com/user/mdar15manager/media/Misc/countdown_zpseikyxevt.jpg.html" target="_blank">http://i207.photobucket.com/albums/bb277/mdar15manager/Misc/countdown_zpseikyxevt.jpg</a> For a web clock and more info go here View Quote View All Quotes View All Quotes Quoted:
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We'er getting closer: http://pluto.jhuapl.edu/Multimedia/Science-Photos/pics/NH_COMP_V4_sets.003.jpg I was downstairs waiting for one of the shuttle busses. On the displays that let you know when the next bus arrives they added a clock for New Horizons. <a href="http://s207.photobucket.com/user/mdar15manager/media/Misc/countdown_zpseikyxevt.jpg.html" target="_blank">http://i207.photobucket.com/albums/bb277/mdar15manager/Misc/countdown_zpseikyxevt.jpg</a> For a web clock and more info go here Any new images or info from NH? |
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We'er getting closer: http://pluto.jhuapl.edu/Multimedia/Science-Photos/pics/NH_COMP_V4_sets.003.jpg I was downstairs waiting for one of the shuttle busses. On the displays that let you know when the next bus arrives they added a clock for New Horizons. <a href="http://s207.photobucket.com/user/mdar15manager/media/Misc/countdown_zpseikyxevt.jpg.html" target="_blank">http://i207.photobucket.com/albums/bb277/mdar15manager/Misc/countdown_zpseikyxevt.jpg</a> For a web clock and more info go here Any new images or info from NH? You can find the raw images here from May 30th. But without processing they are not particularly 'spectacular', especially the ones with the long exposure levels. Though I kinda like this one raw image taken at 53.9M KM of Pluto and Charon: " /> |
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I have a thread on this but I'm cross posting it here because that thread will eventually get buried and I think it belongs here too:
I found these cool vids on the Coriolis effect. If you have two 1080 monitors like me put the vid I linked below on the left. You will see what I mean in a minute. |
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Quoted: Two of Saturn's moons, Epithemeus and Janus, trade orbits every four years. http://www.youtube.com/watch?v=gsHBE3DWCP4 View Quote MAKE A HOLE! |
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Photos from a comet's surface: http://www.space.com/29541-eerie-comet-landscape-photos.html
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Two of Saturn's moons, Epithemeus and Janus, trade orbits every four years. http://www.youtube.com/watch?v=gsHBE3DWCP4 http://www.greuti.ch/cassini/fb_epimetheus_n00043503-36.gif Any idea what moon comes in from the left at the end of the gif? |
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Quoted: Any idea what moon comes in from the left at the end of the gif? View Quote View All Quotes View All Quotes Quoted: Quoted: Quoted: Two of Saturn's moons, Epithemeus and Janus, trade orbits every four years. http://www.youtube.com/watch?v=gsHBE3DWCP4 http://www.greuti.ch/cassini/fb_epimetheus_n00043503-36.gif Any idea what moon comes in from the left at the end of the gif? |
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You can clearly see that the barycenter of pluto and charon is located in empty space: http://i.imgur.com/LgWwoQh.gif View Quote Is there a repeating pattern in the orbital change or is it always for lack of a better term "random" due to the interactions? |
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Quoted: Is there a repeating pattern in the orbital change or is it always for lack of a better term "random" due to the interactions? View Quote View All Quotes View All Quotes Quoted: Quoted: You can clearly see that the barycenter of pluto and charon is located in empty space: http://i.imgur.com/LgWwoQh.gif Is there a repeating pattern in the orbital change or is it always for lack of a better term "random" due to the interactions? The weirdness in the other planets orbits is nonrandom and follows a resonance pattern with their gravity wells interacting with each other. If it was random the would eventually smash into each other. |
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There is a also resonance pattern between neptune and pluto which keeps pluto's orbit stable and prevents a collision between the two. interestingly the resonance pattern actually means that pluto comes closer to Uranus than it ever comes to the outer planet Neptune.
Jupiter: Purple Saturn: Yellow Uranus: Green Neptune: Blue |
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I'm not sure I follow what you are asking. Do you see something I don't see in the gif or are you referring to the recent news that Pluto's other moons have odd spin characteristics? The weirdness in the other planets orbits is nonrandom and follows a resonance pattern with their gravity wells interacting with each other. If it was random the would eventually smash into each other. http://i.imgur.com/cH2l37N.gif View Quote View All Quotes View All Quotes Quoted:
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You can clearly see that the barycenter of pluto and charon is located in empty space: http://i.imgur.com/LgWwoQh.gif Is there a repeating pattern in the orbital change or is it always for lack of a better term "random" due to the interactions? The weirdness in the other planets orbits is nonrandom and follows a resonance pattern with their gravity wells interacting with each other. If it was random the would eventually smash into each other. http://i.imgur.com/cH2l37N.gif Just watching the gif I looks like if if you drew a line following the orbit of Pluto it would not repeat the pattern ... On each orbit around it's berycenter the interactions with the moon are different every time... Or it's just a product of a short gif and too much sun... |
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Quoted: Just watching the gif I looks like if if you drew a line following the orbit of Pluto it would not repeat the pattern ... On each orbit around it's berycenter the interactions with the moon are different every time... Or it's just a product of a short gif and too much sun... View Quote View All Quotes View All Quotes Quoted: Just watching the gif I looks like if if you drew a line following the orbit of Pluto it would not repeat the pattern ... On each orbit around it's berycenter the interactions with the moon are different every time... Or it's just a product of a short gif and too much sun... |
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Quoted: There is a also resonance pattern between neptune and pluto which keeps pluto's orbit stable and prevents a collision between the two. interestingly the resonance pattern actually means that pluto comes closer to Uranus than it ever comes to the outer planet Neptune. Jupiter: Purple Saturn: Yellow Uranus: Green Neptune: Blue Pluto: Purple. View Quote |
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Quoted: So the reference frame is rotating so Neptune doesn't appear to orbit? View Quote View All Quotes View All Quotes Quoted: Quoted: There is a also resonance pattern between neptune and pluto which keeps pluto's orbit stable and prevents a collision between the two. interestingly the resonance pattern actually means that pluto comes closer to Uranus than it ever comes to the outer planet Neptune. Jupiter: Purple Saturn: Yellow Uranus: Green Neptune: Blue Pluto: Purple. http://www.orbitsimulator.com/gravity/pluto2.GIF So the reference frame is rotating so Neptune doesn't appear to orbit? |
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