Can the World be run over?

This is my first post since joining this board so Im sorry if this been posted before

I was thinking about how small a planet we are after reading a recent thread in this forum .Looking at how big some of the planets/stars are we are really but a spec of dust floating in the universe.

Now just say that Alien life forms live on some of the biggest planets out there, It would be safe to assume that they are really large in relation to their planet. Now if they were to travel great distances in their space crafts would they even notice us? I mean if they were to enter our galaxy would they even know we were there? Think of the bugs that humans squash each day without us ever knowing. Could the same fate happen to us? A bigger entity just runs us over as if we were never there?

Great thought, but I don't think its possible. Something to do with mass (size) and gravity crushing anything too large into a ball.

Originally posted by EnigmaAgent
Great thought, but I don't think its possible. Something to do with mass (size) and gravity crushing anything too large into a ball.

Massive planets exsist that I beleive are 4000x the size of us. They are not crushed so life forms could live on them. Mabe they have different laws of physics due to thier size?

Originally posted by No Retreat No Surrender

Originally posted by EnigmaAgent
Great thought, but I don't think its possible. Something to do with mass (size) and gravity crushing anything too large into a ball.

Massive planets exsist that I beleive are 4000x the size of us. They are not crushed so life forms could live on them. Mabe they have different laws of physics due to thier size?

Dont think i have ever heard of planets being 4000x our size(i could be wrong)but, i have heard of stars,like Betelgeuse. Which makes our sun look like a spec of dust.

reply to post by No Retreat No Surrender


Hi there! I don't think so. I think it's like a beach ball in the pool. I mean it is stuck in an orbit and can get knocked out of it I suppose like a billiards in a combo shot. I think everything around it comes with? Actually I don't know. How YOU doin'?

I try to star and flag first posts...I mean if I can stand them at all
Sort of like passing out a cigar. Congrats and welcome. Hope you get your answer newbi.

usualy big planets are gas planets and cannot sustain life.

I suppose it could in a sense be run over by a sufficiently massive object, of which, you have rightly pointed out, there are many. Kind of reminds me of The Hitchhiker's Guide To The Galaxy, when planet Earth is destroyed to accommodate an intergalactic highway.

Thanks for the warm welcome people. This does strike me as something that could be a real possibility alongside the usual things that could hit us like metorites / comets etc.. If you ever looked up and saw the lights of stars going out this may be your reason

reply to post by newcovenant


lmfao
made me smile on a sad day
thanks

reply to post by skywalk

in our solar system yes

reply to post by No Retreat No Surrender


there are more opportunities for difference than just size alone. another couple to consider would be time scale or physical composition. by this I mean if an Alien lived for many thousands of years it could well be possible that they would not be able to perceive us at all. Or an Alien could be pure energy or some other substance so foreign to our understanding of life that no matter our own beliefs we would be considered not a true life form

Most of the popular aliens we see in fiction are so alike us that they would almost certainly have to be related to us in some manner and would not be a true alien species

It is possible that all life is related and could easily understand and interact with each other It is also possible that alien life would be far too different to even recognize each other -- no one knows really

I think it likely that some mixture of related life forms and completely alien life forms exists, how they might interact with each other is entirely speculation

when people say that life can not exist in a gas giant or high gravity planet they mean to say life as we know it

reply to post by No Retreat No Surrender


Well, what about dinasaurs, hasn't it somehow something to do with the amount of oxygen in the air? Rather than the size of the planet? Then again, some fish grow to their natural envoirements....

reply to post by No Retreat No Surrender


Interesting that you think a species which evolved on a larger celestial body would be larger physically. That's 100% wrong. They would be smaller because the gravity on their planet would be much greater than ours. Bugs as you mentioned, are small on land and get larger in the oceans. In the ocean we call them Crustaceans but they're closely related to other arthropods that live on land. They grow smaller on land and larger underwater because the water provides a means to lessen gravity and allows them to move more freely. Sea dwelling mammals are also similar in this regard. The largest animal on earth is a sea dwelling mammal and it's no coincidence that aquatic mammals also grow larger. If beings evolved on another planet with more gravity they would need to be smaller to obtain equal or even superior movement than us. If they did come to earth and were from a larger celestial body they would probably be smaller with superior strength. They could also probably move at a higher rate of speed on our planet.

Another thing you need to keep in mind is that the larger celestial bodies are gas giants which do not have a composition that appears can support complex life or maybe even simplistic life.

reply to post by No Retreat No Surrender


I would imagine that if they have spacecraft that is able to traverse the great distances between solar systems, then their ship's computer's (or equivalent) is able to spot planets that can sustain life. indeed, our planet is such a rareity that it would be the main reason for entering our solar system in the first place.

nice post btw - thanks for the thoughts that came from reading it

Thanks and best,

R