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So the mass of Ganymede is estimated - not calculated. To be honest, I don't think there will be any self-consistent and elegant way to explain away all of the observations we've made of it. Who is the longest reigning WWE Champion of all time?

Just went and did some figuring. They farm the alien and Earth plants the aliens gathered for study and maybe have some domestic animals, too, also originally gathered by the aliens. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. To learn more, see our tips on writing great answers. Ganymede itself is packed with high-density materials such as tungsten and uranium deposits resulting in an earth-like overall mass easily 50 times as huge as it should be. What square matrices cannot be expressed as the sum of symmetric and skew-symmetric parts. A 100kg man would weigh 14.6kg on Ganymede. https://en.wikipedia.org/wiki/Mass_concentration_(astronomy) 1. Ganymede has 2.4% of Earth's mass. Good food for thought about the exotic materials and physical appearance. For example clawed feet to grasp the ice, magnetic boots, or even just bouncing around in ice tunnels are all possible. If it had more gravity then it would distort the orbits of the other moons and we would know about it. The Galilean moons (or Galilean satellites) / ɡ æ l ɪ ˈ l iː ə n / are the four largest moons of Jupiter—Io, Europa, Ganymede, and Callisto.They were first seen by Galileo Galilei in December 1609 or January 1610, and recognized by him as satellites of Jupiter in March 1610. If the caverns are sealed and air tight the air will be kept in by the caverns, and the artificial gravity wouldn't be needed to retain atmosphere, but might be necessary to provide gravity for the health of the human population. Let's back track and figure out how we know the mass/gravity on Ganymede.

Topologically speaking, you can view gravity as an indentation in space-time (ie: the old rubber-sheet demo) Generally the distortion is across a wide area and the indentation is very shallow, so if you wanted to have a close-ranged gravity field you'd need to essentially "scrunch up" spacetime to do it.

That mass is what generates gravity. needed for their survival. Unless it's determined by perturbations of other moons' orbits, but that's hardly trivial. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.

So in your case, we'd have to have grossly mismeasured either Jupiter's orbital movements, or Ganymede's (or likely both to get the increase in mass you need).
If it had more gravity then it would distort the orbits of the other moons and we would know about it. Why does the manual for inner tube say max psi is 4.5? A 100kg man would weigh 14.6kg on Ganymede. Worldbuilding Stack Exchange is a question and answer site for writers/artists using science, geography and culture to construct imaginary worlds and settings. If we take a point inside the sun, however--say somewhere at half the sun's radius--then that point would feel a higher gravitational pull if all the sun's mass were compacted to within half the sun's diameter. (I'll upvote you as soon as I have enough rep to do so. Ganymede’s surface is a roughly equal mix of two types of terrain: very old, highly cratered dark regions (left), and somewhat younger (but still ancient) lighter regions marked with an extensive array of grooves and ridges (right). Making statements based on opinion; back them up with references or personal experience. How much does does a 100 dollar roblox gift card get you in robhx? Did the House Select committee on Assassinations come to the conclusion that JFK was "probably" eliminated as part of a conspiracy? How can I model a decorative serving tray? By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. Ano ang pinakamaliit na kontinente sa mundo? You need to come up with a way to achieve your goals that does not involve gravity as we know it. To get the mass of a planet, it needs to have a moon (the method allows you to get the mass of a central body - not those orbiting it).

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