Comments by "Brandon" (@gravoc857) on "A Strange Signal Detected From Jupiter's Moon" video.

@themeanestkitten Want some nightmare fuel? We’ve found “super Earth’s” that are candidates to host life. They have similar conditions to Earth’s that could make life possible there, but these planets are much bigger than Earth. If life exists & thrives on these planets. It’s likely their behemoths would put Earth’s largest known species to shame. Imagine a whale the size of the Empire State Building. We took the size of blue whales here on Earth, and scaled them up to be proportionate size in super Earth’s. The Empire State Building is the size of a blue whale, if scaled for a super Earth. Crazier yet is bigger planets generally have much denser atmospheres. It’s speculated that atmospheric pressures near the surface would be high enough for non-avian creatures to be able to fly. A human, if strong enough to withstand its gravity, strapped some wings onto itself could fly. It’s likely that many of the land animals and ocean animals would take advantage of easy flight due to a thick atmosphere that has properties resembling of water. So imagine a flying Empire State Building sized whale.
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@BadCompany3 Aquatic life would thrive in planets with stronger gravity. Gravity doesn’t really matter when the stuff you’re surrounded by is all the same density. A super earth with lots of water could breed oceanic giants. The challenge for life on stronger gravity planets is gravity will be unforgiving to ocean life once it tries to transition to land. It will require bigger bones, stronger muscles and a clever cardiovascular system. These are all very expensive evolutionary traits. But just because they are expensive doesn’t mean they are impossible. Take a look at humans and octopus for example. Both have very expensive brains that are big & slow to develop. When humans were prey, our brains were a disadvantage to us and got many of us eaten by predators. Whether it be a mother needing labor or giving labor. Or the process of keeping a helpless child alive longer than what is needed for other species with smaller brains or even our curiousity. Our brains allow us to be fascinated by the world, which in turn means some of us would have died out of curiousity of predators. Something smaller brained animals generally do not succumb from. Yet, octopus and us are still here. A planet with stronger gravity will favor different evolutionary traits. For example, insects here have a biological version of hydraulics. A planet with stronger gravity might have life that favors biological hydraulics in larger species as a way to cope with increased gravity. Stronger gravity isn’t all just cons though. Like I mentioned in my above comment. A planet will strong gravity will have a dense atmosphere at the surface. This makes flight much easier on these planets than it is on Earth. Meaning, you don’t need to achieve apex evolutionary traits that allows avian creatures on earth to fly. Flying creatures on these planets will have a much easier go at it, meaning many evolutionary paths will allow creatures flight, that aren’t specialized in it. Like how earth has mammals that specialize in gliding. These planets would have an abundance of creatures that come up with secondary mechanisms to achieve partial or full flight. Kinda funny but not farting might be a mechanism. At these densities, lighter gases will have a lot more desire to float up than they do here on Earth. A small creature might accidentally discover temporary flight after eating something gassy and finds itself floating. After thousands upon thousands of generations of trial and error. The species may master eating certain foods to generate internal gas, and then lower themselves from the air by releasing the gas. Smaller gravity planets would favor massive frames but they would be light. These frames would benefit those attempting to reach up or across. Or those wanting to run faster in a lower gravity environment. Or those wishing to live in extreme environments such as mountain overhangs. Or those who want to jump higher and farther, or fly higher and faster. So in short. Strong gravity worlds favor massive creatures as the sheer size is needed to cope with the gravity. The oceans would be capable of evolving giants. Those giants might eventually move to land. Small gravity planets will allow more versatility and flexibility in frame evolution. There won’t be a strong demand for big bones, strong muscles or complex systems to cope with the excess gravity. Therefore these species will prioritize evolutionary advantages that assist them in surviving their environment, rather than surviving the forces around their environment.
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