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Relative to Sun Earth,and Solar System
Best way for us to visualize size,and speed of motion. Here is a good
illustration. It takes 11 Earth's to equal the size of Jupiter.Jupiter has a period of rotation of 10 "Earth hours". Rather than say the Sun is 93 million miles away we should say you can fit 97 Suns between it and Earth. The moon is 30 Earth's away. I like quasars being the size of our solar system. It is very hard to think we can tell 10 LY from 20 LY in our minds eye. I like knowing a photon can circle the Earth 7 times in one second. I like seeing I can stop a ray of light an inch and a half from its source. To say a gamma explosion took place 7.3 billion LY from us only means to me it happened "once upon a time" and very far away. Bert |
#2
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G=EMC^2 Glazier wrote: Best way for us to visualize size,and speed of motion. Here is a good illustration. It takes 11 Earth's to equal the size of Jupiter.Jupiter has a period of rotation of 10 "Earth hours". Rather than say the Sun is 93 million miles away we should say you can fit 97 Suns between it and Earth. The moon is 30 Earth's away. I like quasars being the size of our solar system. It is very hard to think we can tell 10 LY from 20 LY in our minds eye. I like knowing a photon can circle the Earth 7 times in one second. I like seeing I can stop a ray of light an inch and a half from its source. To say a gamma explosion took place 7.3 billion LY from us only means to me it happened "once upon a time" and very far away. Bert Hi Bert, Also a neutron star is about the size of an average city. A tablespoon of its material weighs as much as a mountain on earth. And a mountain range on a neutron star would rise no more than a few centimeters, yet poke above its atmosphere. A typical white dwarf star is about the size of the Earth, but has a mass equivalent to the sun. And a Schwarzschild black hole singularity, well you could put it in your pocket! But I wouldn't advise it! Double-A |
#3
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Hi Double-A you sited lots of good Earth reference sample. When
astronomers all sound like Carl Sagan an say Billion,and billions of LY years they are referring to space and time with nothing to relate it with. Knowing that there is a very big difference between the density of interstellar space that which separates the stars,and that of the extragalactic space that separate galaxies. I have never read how this cubic space difference is shown in a way that gives me a picture or something that shows their difference Bert |
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From Bert:
the Sun is 93 million miles away we should say you can fit 97 Suns between it and Earth. =A0 The moon is 30 Earth's away. Another rather breathtaking factoid is that the entire Earth-moon system would fit comfortably inside the Sun with room to spare (diameter of moon's orbit=3D approx. 480,000 miles, Sun's diameter=3D 865,000 miles. Light takes 4.65 seconds to cross the face of the sun. If your car makes it to 200,000 miles, it hasn't even reached the moon, and has crossed only a fraction of the sun's disc. Dat's one big Mamoo. But a mediocre little star as stars go. oc |
#5
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G=EMC^2 Glazier wrote: Hi Double-A you sited lots of good Earth reference sample. When astronomers all sound like Carl Sagan an say Billion,and billions of LY years they are referring to space and time with nothing to relate it with. Knowing that there is a very big difference between the density of interstellar space that which separates the stars,and that of the extragalactic space that separate galaxies. I have never read how this cubic space difference is shown in a way that gives me a picture or something that shows their difference Bert According to what I found, air at sea level has 10 trillion atoms per cubic meter. In the gas of interstellar space there are about 1 million atoms per cubic meter. In the gas of intergalactic space, there are only about 10 atoms per cubic meter. Double-A |
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Hi Double-A & oc Here is a relative big reference frame to show how
tiny tiny is. It goes like this. "If an atom was magnified to the known size of the universe at this time a planck length would measure 100 feet." Size of universe at this time ?? Size of atom ?? Size of Planck length 10-43 of a meter?? Well I do know what 100 feet looks like. I planted two palm trees 100 feet apart,So you see the Earth's surface is our best relative way of comparing distances,sizes,and events. Bert |
#7
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Watching on TV the Indianapolis race is not all that exciting or
interesting. The cars look like ants going around,and very hard to relate their 225 mph speed on a flat screen. Turn the sound off and with out that zooming sound its duller still. I*t is no wonder that movies are shown bigger than life. How scary would Frankenstien monster be if not for that 16 foot screen Bert |
#8
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G=EMC^2 Glazier wrote: Watching on TV the Indianapolis race is not all that exciting or interesting. The cars look like ants going around,and very hard to relate their 225 mph speed on a flat screen. Turn the sound off and with out that zooming sound its duller still. I*t is no wonder that movies are shown bigger than life. How scary would Frankenstien monster be if not for that 16 foot screen Bert The Indianapolis 500 can be run nowadays in a very reasonable length of time, because of the high speeds they attain now. When I was a kid, it took hours longer. I seem to remember even listening to it on radio (maybe the TV was broken). I'll bet you can remember when it was really an all day affair! I used to have a picture of Eddie Rickenbacker driving in the race. The cars sure looked different in those days. In 1914 it took Eddie 7h03m34.59s to complete the race in his Duesenberg (didn't win). Double-A |
#9
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Hi Double-A Did not watch car racing when young. I watch horse
racing(still do) In 1957 I bought a white Dorge 500 because it was the lead car used that year at the Indianapolis race. I get speeding tickets a lot. I have a Fleetwood with a 5.7 engine,and it can go very fast for a big car. Love speed it gives me a rush. Bert |
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