Planet circling which takes 1000 years - speed of 900 km/h

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I decided on starting a thread on a topic that recently intriques me a lot. The largest star we know about so far, is so immensely HUGE that if - according to this clip: http://www.youtube.com/watch?v=HEheh1BH34Q - you were flying on the board of a plane above the surface of this star at 900 km/hour, it would take you 1100 years to circle it. And now there comes what I meant starting this thread: imagine there would be a planet that size. Can you imagine in what way it would affect the development of the civilisations of this planet? What do you think: would it be like that - assuming some of them achieved our level of development - that they would even know about the existence of some civilisations having a lower level of development? You know: now we have civilised countries like those there are in Europe and there is also Papua New Guinea with all those primitive tribes living there, with their headhunters and their beliefs like that when you drink the sperm of an adult man being a boy, it's going to make you big and strong so the boys do this with men to be strong and big faster. Computers, lasers, all that modern technology and so on - but also people living like in paleolit. Only imagine what the life in there would be like: medieval like kingdoms, "papuases", 19th century- like worlds and our world-like ones.

That would be a very interesting thing to see.

they'd look nothing like humans.

The gravity would kill everything.

But assuming that they DO look like humans and gravity isn't something we should take into consideration...?

A planet could never get that big. Nor even a millionth that size. The universe just doesnt work in a way that such a thing could form.

You can pile that much gas in one place (and start a thermonuclear reaction making it into a star), but you cant pile that much solid matter in one place to form a solid planet that size- and if you could it would just collapse into a black hole.

However - in theory the cart could come before the horse: an intelligent species that evolved on a small earthlike planet (like ourselves in the distant future) could grab a nieghboring gas giant (like Jupiter) and use the material to build a "Dyson Sphere". Basically a hallow ball- a spherical shell around their sun with a radius equal to that of the distnace of their home plane that could capture and utilize ALL of that star's 'solar energy't. Our descendants might live in such a thing. In effect it would mean we would be moving from an 8000 mile wide natural solid sphere (earth) to a 200 million mile wide artifical planet that would be something like what you envision (were movin' on up-to the east side- to a DE luxe apartment in the sky- eeee!). But we would already have done all our "evolving" here on Earth.

The other way something LIKE that might occur is with a brown dwarf. The gas giants in our solar system are -just that- giant spheres of gas (with maybe solid cores)-built more like the Sun than like the Earth. Jupiter, Saturn, Uranus, and Neptune, even give off heat due to chemical reactions. If Jupiter were fifty times as massive it would be able to have thermonuclear fusion occur at its core, and it would become a small star.

In betwwen gas giants and true stars are the brown dwarves. One was discovered near our solar system recently. Brown dwarves could generate enough heat to foster life -and do it without sunlight from a nearby star. So living things might exist in bodies bigger than the earth (brown dwarves), but not on its surface, but INside the body of the brown dwarf.

Just saw an article the other day regarding a hitherto unknown tribe in the Amazon. Seems they were forced into a neighboring tribes territory by logging operations scaring them.

You don't need a HUGE planet, we haven't really explored this little sphere.

Perhaps this planet could've formed in a universe where the gravitational constant is much lower.