Artifical planets

ronbyrne2005

Would it be possible to create artifical planets in same orbit(obviously in different location to earth) as earth on maybe far side of solar system. Would our sun hold such a planet in orbit or would gravity of sun/earth fling such an artifical planet out of the solar system or into the sun?

localnutjob

its already been done look at iapetus

you think that ridge around the equator is natural ?
i think not

http://www.enterprisemission.com/moon1.htm

http://www.checktheevidence.co.uk/cms/index.php?option=com_content&task=view&id=50&Itemid=59

Capt'n Midnight

not directly opposite the earth's orbit as mars and venus would be closer than the earth at some point

you could have something in a trojan orbit 60 degrees ahead or behind the earth, but it would have to be good bit smaller than the moon

lostexpectation

dyson sphere ftw

ronbyrne2005

Capt'n Midnight wrote: »

not directly opposite the earth's orbit as mars and venus would be closer than the earth at some point

you could have something in a trojan orbit 60 degrees ahead or behind the earth, but it would have to be good bit smaller than the moon

Could we observe such artifical planets in other solar systems where inhabitants are much more advanced?

Elem

How would we create an atmosphere on it?

Captain Chaos

Install artificial gravity of some kind, maybe some sort of gyro or dynamo in the core. Set up sealed green houses for plants. Expell the oxygen they produce and hope the gravity is strong enough to hold it. Keep adding till you get the right combination of elements in the atmosphere. We can create synthetic O zone for a UV barrier.

It's all possible in theory.

AtomicHorror

ronbyrne2005 wrote: »

Could we observe such artifical planets in other solar systems where inhabitants are much more advanced?

As I understand it, there's a couple of ongoing sky surveys looking for Dyson spheres, ringworlds and dyson swarms. They've got a few candidate stars, but right now we don't have the tech to conclude much.

Captain Chaos wrote: »

Install artificial gravity of some kind, maybe some sort of gyro or dynamo in the core. Set up sealed green houses for plants. Expell the oxygen they produce and hope the gravity is strong enough to hold it. Keep adding till you get the right combination of elements in the atmosphere. We can create synthetic O zone for a UV barrier.

It's all possible in theory.

Why not just build a stanford torus? There's no advantage to a planet-style structure at all.

ronbyrne2005

Would we have access to enough matter to construct a dyson sphere?

Would it be possible to build a large solar blocker/collector between earth and sun that could block/filter excess solar radiation at times of planetary warming ? How large would such a blocker have to be if located say ten million miles from us towards the sun in order to cover/block the entire earth? Couldnt be arsed using my leaving cert maths on it.

Capt'n Midnight

there is one tiny little problem with Dyson spheres, the gravitational attraction is equal and even within the sphere, so it doesn't say in orbit with regard to the star it is orbiting.

light pressure means that sun screen would be pushed out of the way
maybe angled mirrors or perhaps prisms to create back pressure so the array can station keep

or we could zap the atmosphere with cosmic rays to create more clouds to reflect the light
cf. Daisyworld

lostexpectation

chekc out dyson freemans talk on this on TED.com.