Planet Mars has a very thin atmosphere which is composed of 96% carbon dioxide, 1.93% argon and 1.89% nitrogen along with traces of oxygen and water. d) It would merge into the water planet; denser materials sinking toward the core and lighter materials forming part of the atmosphere. Based on that, you could have a minor planet made of ice, 260 km in diameter, and consisting entirely of water, I think, with a surface layer of organic ionic fluids or a scum of organics in solid form floating on the surface. A small chunk of ice could survive for quite some time in outer space before sublimating to nothing. Larger than Earth but smaller than Uranus, GJ1214b has a lot more water and a lot less solid material than our home planet. The actual number is 0.687 grams per cubic centimeter. Strange Super-Earth Planet Has 'Plasma' Water Atmosphere.

So if we had a planet the size of earth made up entirely of water, about half way down to its center it would be solid ice at pretty much any temperatures. In other words: Warm planet - needs to be bigger to keep the water in. Please correct me if I am wrong. Assume an equilibrium blackbody temperature of 278.3K and find the minimum mass of water that is self-gravitating. 1. The smallest hydrogen-burning stars are roughly 14 times the mass of Jupiter though … So we would have to be about 3 million meters (3000km, 1860 miles) under the water. What would happen? By Nola Taylor Redd 01 October 2013. To compare, the radius of earth is about 6400km or almost 4000 miles. Uranus orbits the Sun once every 84 years, taking an average of seven years to pass through each constellation of the zodiac. In 2033, the planet will have made its third complete orbit around the Sun since being discovered in 1781. Vesta’s double that diameter Water has several phases and/or crystalline structures at temperatures and pressures that aren't typical of Earth. What would happen?

It's obviously not possible to have a planet the size of the earth to be made entirely out of water, because of the kind of Stack Exchange Network Stack Exchange network consists of 177 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Suppose Saturn were placed on a much larger planet made entirely of water. e) There would be a devastating impact and Saturn would be torn apart to form a … A planet made entirely of water.? That makes it about the same size as 88 Thisbe. 2. What would the composition of this "planet" be if we went past that point? Larger than Earth but smaller than Uranus, GJ1214b has a lot more water and a lot less solid material than our home planet. Shares . c) It would be spread out due to the rotation of the water planet. Saturn has the lowest density of all the planets in the Solar System. Research suggests the planet has no water at all, and appears to be composed mainly of carbon (as graphite and diamond), iron, silicon carbide, and, possibly, some silicates. If by what you mean disassociating the water altogether and/or fusing the hydrogen in the water, you're looking at a very metallic star. That could last for billions of years. Cold planet - it can be smaller.

It would merge into the water planet, denser materials sinking toward the core and lighter materials forming part of the atmosphere
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