hmm, UFO's

[rudecherub]

Bedazzled said:

tuscaneer said:

Yeah boats went from wood to metal.we even got airbourne.it still is nothing on the scale of the time and distances you are talking about moving between stars

Sure, but in just 70 years we went from the first powered flight to walking on the moon. Imagine a civilisation with technology a million years more advanced than ours. Think about it for a minute. They might be able to manipulate gravity, mass or spacetime, as we click a few buttons on a microwave.

I imagine they'd be quite curious to observe chimps milling about in millions of little metal boxes and lobbing chemical rockets into LEO; it could be their equivalent to watching Time Team.

That's the Fermi Paradox, there is an immense period of time for intelligent life to arise - but so far, beside us, there is no evidence that it has.

More importantly there is no need for really exotic tech - given the vast amount of time - to travel very quickly, even moving at speeds that we could achieve now, colonisation of the galaxy would take approx 50 million years, move somewhat faster, still slower than light, a mere 5 million years.

Where are the Dyson Spheres? Where are generation star ships, where are the self replicating probes?

[TheHeretic]

The Fermi paradox seems weak to me.

[jmorgan]

rudecherub said:

Where are the Dyson Spheres?

Comet. £299 and an extended warranty.

[TheHeretic]

jmorgan said:

rudecherub said:

Where are the Dyson Spheres?

Comet. £299 and an extended warranty.

Would you be able to detect a Dyson sphere, if it totally encloses a system?

[jmorgan]

Be an interesting idea. I know a Dyson sphere is a thought experiment but how much resource would it take? What else does a sun put out apart from light?

[TheHeretic]

jmorgan said:

Be an interesting idea. I know a Dyson sphere is a thought experiment but how much resource would it take? What else does a sun put out apart from light?

Well, radiation of all sorts, I suppose... Particles, and so on. Would a Dyson sphere have to vent every now and then in order to maintain a 'vacuum' due to particles released by the sun?

[jmorgan]

TheHeretic said:

jmorgan said:

Be an interesting idea. I know a Dyson sphere is a thought experiment but how much resource would it take? What else does a sun put out apart from light?

Well, radiation of all sorts, I suppose... Particles, and so on. Would a Dyson sphere have to vent every now and then in order to maintain a 'vacuum' due to particles released by the sun?

There as a truck load of stuff coming off the sun as I guess you know. Interesting aside to this is the Voyager at the edge of our system detecting the interface between our system and the galaxy. Somewhere in this is a black body radiator which I do not fully understand. Then if you en-globe a sun, what are the effects on the surrounding, will that give a tell tale if indeed something can survive all the emissions from a sun.