how  thick is our planet?
462097
"The equatorial diameter is c.7,926 mi (12,760 km) and the polar diameter 7,900 mi (12,720 km)"\nThe Earth is the fifth largest planet of the solar system. The reason why earth is in a spherical shape, is because of the gravitational pull. The number that appeared most often in my sources was 12,756 km. There are actually two diameters of Earths: equatorial and polar. One of my sources stated that the equatorial diameter is 40 kilometers wider than the polar diameter. The Earth is not a perfect sphere because of a bulge in the equator. Most of the current knowledge of the Earth has been collected in three methods, through satellites, telescopes and outer space exploration.
1089748
no, but it would be very stupid to assume that Earth is the only planet that can sustain and contains life.  the universe is gigantic.  i don't think any human can truly grasp how vast the universe is.
309704
Approximately 193,000 atoms thick
1009966
Can the Earth sustain itself?\nOr us?\nThe earth will be around longer than we will.
1052164
Ask those living in other planets!
807776
42 folds to the Moon\n51 folds to the Sun\n53 folds to Jupiter\n56 folds to Pluto\n69 folds to the nearest star\n70 folds to the nearest extra-solar planet\n\nMost people do not believe these answers as they are counter-intuitive, so I will talk you through it in easy stages. The point to grasp is that every ten folds means just over a thousand times increase in the height of the resulting pile of paper.\n\nA ream of ordinary 70 gsm photocopy paper is 500 sheets and about 2 inches thick, \n\nSo let us say that after 10 folds of our theoretically infinitely large (i.e. as large as we need it to be) piece of paper we have 1,024 thicknesses (2^10) and that that is 4 inches thick (a third of a foot).\n\nAfter 20 folds we have 2^20 thicknesses = 4096 inches = 341 feet 4 inches.\n\nThe Empire State Building is 1,250 feet tall, so after 22 folds of the paper it has grown taller than the height of a 102-floors-tall skyscraper,\n\nThere are 5280 feet in a mile, \n\nAfter 30 folds we have 2^30 thicknesses = 349,184 feet 4 inches = 116,395 yards = 66.13 miles. i.e. it was over a mile high after 24 folds and more than 2 miles high after 25 folds\n\nMount Everest is only 5 miles high so the pile of paper was taller than Mount Everest after 27 folds.\n\nThe moon is 238,000 miles away on average (let us not worry about apogee and perigee).\n\nAfter 40 folds we have 2^40 thicknesses = 1,024 x 66.13 miles = 67,720 miles i.e. more than a quarter of the way to the moon.\n\nSo clearly 42 folds more than suffices to take us to the moon. How about the Sun?\n\nThe Sun is on average 93,000,000 miles away (let us not worry about perihelion and aphelion)\n\nAfter 50 folds we have 2^50 thicknesses = 1,024 x 67,720 miles = 69,345,477 miles \n\nSo after 50 folds, we would then be most of the way to the sun. 51 folds more than suffices to get there. So how about Jupiter?\n\nThere are on average 486,587,517 miles to Jupiter. So another couple of folds should do the trick. 53 folds = 8 x 69,345,477 miles = 554,762,813 miles i.e. 53 folds more than suffices to get to Jupiter, And 56 is ample for the short hop to Pluto.\n\nAnd the nearest star?\n\n1 light year = 5.879 ×10^12 miles\n4.2 light years = 24.69 ×10^12 miles\n\nAfter 60 folds we have 2^60 thicknesses = 1,024 x 69,345,477 miles =  71,009,769,448 miles\n\nAfter 70 folds we have 2^70 thicknesses = 1,024 x 71,009,769,448 miles = 72,714,002,890,752 miles (72 x 10^12 miles)\n\nSo clearly 69 folds gets us to Proxima Centauri and half way back again! 70 would take us to Sirius (8.6 light years away) and half way back again. Or, more interestingly, it would easily take us to Epsilon Eridani b, the nearest known extra-solar planet (10.5 light years away),\n\nI will leave you to work out how many folds you would need to get to the nearest galaxy!
526135
It's about 1/6 earth gravity. (But don't forget to add in 1/6 of the spacesuit you have to wear, too.)
713948
No, the circumference is nearer 24,900 miles at the equator, if by planet you mean Mother Earth.
271490
Yep, even though we are at the 'bottom' of the earth we too have gravity.\n\nLucky for us, hey!!!
125194
The Earth consists of several atmospheric, hydrologic, and mainly geologic layers. Its components are the atmosphere, the hydrosphere, the crust, the mantle, and its core. The biosphere is a tiny layer in this composition and is usually not considered part of the physical layers of the Earth.\n\nThe geologic component layers of the Earth are located at the following depths below surface:\n\n0 to 60 km - Lithosphere (locally varies between 5 and 200 km) \n0 to 35 km - Crust (locally varies between 5 and 70 km) \n35 to 60 km - Uppermost part of mantle \n35 to 2890 km - Mantle \n100 to 700 km - Asthenosphere \n2890 to 5100 km - Outer core \n5100 to 6378 km - Inner core \n\nArea:\n\nTotal: 510.073 million km2 \nland: 148.94 million km2 \nWater: 361.132 million km2 \nNote: 70.8 % of the world's surface is covered by water, 29.2 % is exposed land \nLand boundaries: the land boundaries in the world total 251,480 km (not counting shared boundaries twice)\n\nCoastline: 356,000 km\n\nMaritime claims: see United Nations Convention on the Law of the Sea\n\nLand use\nArable land: 10% \nPermanent crops: 1% \nPermanent pastures: 26% \nForests and woodland: 32% \nUrban areas: 1.5% \nOther: 30% (1993 est.) \nIrrigated land: 2,481,250 km2 (1993 est.)\n\n\nContiguous zone: 24 nautical miles (44 km) claimed by most, but can vary \nContinental shelf: 200 m depth claimed by most or to depth of exploitation; others claim 200 nautical miles (370 km) or to the edge of the continental margin \nExclusive fishing zone: 200 nautical miles (370 km) claimed by most, but can vary \nExclusive economic zone: 200 nautical miles (370 km) claimed by most, but can vary \nTerritorial sea: 12 nautical miles (22 km) claimed by most, but can vary \nNote: boundary situations with neighboring states prevent many countries from extending their fishing or economic zones to a full 200 nautical miles (370 km) \n42 nations and other areas are completely landlocked (see list of landlocked countries)
1122794
Well, just our own galaxy is around 1 x 10^18 km across (or 1 x 10^21 m). Lets scale it down to the diameter of the Earth  at 12,750 km, or lets call it around 1 x 10^7 m. This means we would have to scale down the galaxy by a fact of 10^14.\n\nOn this scale, the Earth would have a diameter of around 1 x 10^-10 m. This is about one ten thousandth the diameter of a human hair. So a galaxy the size of the Earth would have and Earth 1/10000th the size of a hair.\n\nIt does not help our concepts of the scales to continue this to the Universe - its just very very big.
478701
Equatorial diameter 6,804.9 km (4228.4 Miles)\n(0.533 Earths)\nPolar diameter 6,754.8 km (4197.2 Miles)\n(0.531 Earths)\nOblateness 0.007 36\nSurface area 1.448×108 km2 (55.907 Million Square Miles)\n(0.284 Earths)\n\n\n"Mars-5-inch-thing" Sure... but in which category of questions are we?
164683
547 million square feet. Going with our height of 11,500 feet from Base Camp to summit, we can peg the volume at 2.1 trillion cubic feet. Multiply that by the density and eureka! Everest tips the scale at a honking 357 trillion pounds. And then there's the snow and ice.
349366
"Diameter: \n Equatorial 12,756.274 km \n Polar 12,713.504 km \n Mean 12,745.594 km"\n\n"At the equator the diameter of the earth is 7927 miles; at the poles, it is very close to 7900 miles. 27 miles, a difference of 0.0034 is just enough to give mapmakers a headache."\n\n"the earth's diameter is 7,912 English miles"
509040
The Earth is not Hollow. Below the 60 Km crust is the semi-liquid Mantle. The core at the center is Solid.
490970
The Planet in which we all live on.
905767
You are making it needlessly hard on yourself.  The planet has the same mass as the earth, and someone on it weight the same as on earth, therefore the surface of the planet is the same distance from its center as the earth radius, i.e. this planet has the same dimension as earth.\nSo, the radius of the planet is 6,372.797 km, same as earth's.\nYou don't need to compute anything.  The orbital velocity of the planet has nothing to do with it.\nIf the weight was different, you only need to scale it remembering that the weight would vary as an inverse of the square of the radius.