How could Mars have once had oceans? It has 37% mass of Earth.. | |
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Bloody Peasant!
User ID: 75284939 United States 01/27/2021 09:57 PM Report Abusive Post Report Copyright Violation | Flat Mars society This business will get out of control. It will get out of control and we'll be lucky to live through it. -Admiral Josh Painter The past was alterable. The past never had been altered. Oceania was at war with Eastasia. Oceania had always been at war with Eastasia. -Orwell Bloody Peasant |
Bloody Peasant!
User ID: 75284939 United States 01/27/2021 10:00 PM Report Abusive Post Report Copyright Violation | Wut This business will get out of control. It will get out of control and we'll be lucky to live through it. -Admiral Josh Painter The past was alterable. The past never had been altered. Oceania was at war with Eastasia. Oceania had always been at war with Eastasia. -Orwell Bloody Peasant |
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tamarack User ID: 34769994 United States 01/27/2021 10:01 PM Report Abusive Post Report Copyright Violation | Jupiter's moon Europa has an ocean. [link to solarsystem.nasa.gov (secure)] "Scientists are almost certain that hidden beneath the icy surface of Europa is a salty-water ocean thought to contain twice as much water as Earth’s oceans combined." |
Anonymous Coward User ID: 77863298 United States 01/27/2021 10:05 PM Report Abusive Post Report Copyright Violation | But atmospheric pressure would change with less mass to hold it...which is what he is referring to. Also...its flat. I know what he was referring to, but what he said was it was caused by gravity. Gravity is a universal constant, which we try to measure with mass -- mass does not create it. Thus changing your relative position to a mass-ive object does not change gravity. |
Anonymous Coward User ID: 78321357 United States 01/27/2021 10:07 PM Report Abusive Post Report Copyright Violation | Just reading about new NASA Mars rover and all its new capabilities. Higher speed travel, microphones and HD cameras to document the entire landing. Etc... They are landing in an area believed to possibly be rich in ancient life.. then it occurred to me. Quoting: gnfr 78571889 How could Mars have ever had an atmosphere that had oceans and, presumably life, when it has 37% the mass of the Earth? Throwing OUT the fact Mars is 34 million miles further away from the Sun, The density of our atmosphere is dictated by the gravity of the Earth. Presuming the star at the center of our solar system is amenable to allowing a couple of circling rocks to attract an atmosphere, the planets mass, mathematically, dictates how much "atmosphere" it can 'retain. Even with a more 'friendly' Sun, how could Mars have retained ANY kind of atmospheric density that resembles Earth, with oceans, with only 37% the mass of the Earth? On Earth at 7,500 feet of altitude, water boils at a 198° and evaporates faster.. thats our gravity, a mile and quarter away from from sea-level. I haz the dumb |
Jungleboogie
User ID: 76648271 Canada 01/27/2021 10:08 PM Report Abusive Post Report Copyright Violation | How could Mars have ever had an atmosphere that had oceans and, presumably life, when it has 37% the mass of the Earth? Throwing OUT the fact Mars is 34 million miles further away from the Sun, The density of our atmosphere is dictated by the gravity of the Earth. Presuming the star at the center of our solar system is amenable to allowing a couple of circling rocks to attract an atmosphere, the planets mass, mathematically, dictates how much "atmosphere" it can 'retain. Quoting: gnfr 78571889 Venus also has far less mass than Earth, Sherlock. Yet it has a much denser atmosphere. Another example: Pluto, Mercury & Triton have virtually no atmosphere and yet Io has a significant atmosphere. Best pick up a few more shifts at Walmart and leave the heavy thinking to others. Look at the bright side, if you work hard enough, you could make shift supervisor one day. Now wouldn't that be something! Embrace the cognitive dissonance. |
Bloody Peasant!
User ID: 75284939 United States 01/27/2021 10:14 PM Report Abusive Post Report Copyright Violation | But atmospheric pressure would change with less mass to hold it...which is what he is referring to. Also...its flat. I know what he was referring to, but what he said was it was caused by gravity. Gravity is a universal constant, which we try to measure with mass -- mass does not create it. Thus changing your relative position to a mass-ive object does not change gravity. Without mass there is no gravity. Do you have a mathematical explanation how you can calculate gravity without mass? Using the math i understand, you can calculate the force of gravity just by knowing mass and distance. This business will get out of control. It will get out of control and we'll be lucky to live through it. -Admiral Josh Painter The past was alterable. The past never had been altered. Oceania was at war with Eastasia. Oceania had always been at war with Eastasia. -Orwell Bloody Peasant |
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WiscoSteve
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Agent 99
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Jungleboogie
User ID: 76648271 Canada 01/27/2021 10:56 PM Report Abusive Post Report Copyright Violation | Just reading about new NASA Mars rover and all its new capabilities. Higher speed travel, microphones and HD cameras to document the entire landing. Etc... They are landing in an area believed to possibly be rich in ancient life.. then it occurred to me. Quoting: gnfr 78571889 How could Mars have ever had an atmosphere that had oceans and, presumably life, when it has 37% the mass of the Earth? Throwing OUT the fact Mars is 34 million miles further away from the Sun, The density of our atmosphere is dictated by the gravity of the Earth. Presuming the star at the center of our solar system is amenable to allowing a couple of circling rocks to attract an atmosphere, the planets mass, mathematically, dictates how much "atmosphere" it can 'retain. Even with a more 'friendly' Sun, how could Mars have retained ANY kind of atmospheric density that resembles Earth, with oceans, with only 37% the mass of the Earth? On Earth at 7,500 feet of altitude, water boils at a 198° and evaporates faster.. thats our gravity, a mile and quarter away from from sea-level. I haz the dumb Embrace the cognitive dissonance. |