Nukes would be almost useless if they stayed in space, if they were in orbit nukes might just do some nice damage, what we need is lasers or some sort
of rail gun system on aircraft that can make limited space flight, also rail gun ground based systems able to shoot lots of projectiles into space
like a machine gun, would do more damage then a nuke, nukes in space dont work the same as on the ground as there is no air for the explosion fire it
would go boom but not boom how we would want it.
I think if Aliens might be hostile, theres alot of land in Australia, Russia, both North and South poles too ready for the taking for a beach head,
all it takes would be if they had force fields they could just land and deploy the fields and thats that occupy the land.
If they are peaceful they would either stay near the moon or if they had permission to land or decided to land they would choose either USA, Russia,
Now i think on it why even bother landing on Earth if they were hostile or wanted land they might first take one of the planets in the solar system
possible planet might be Mars, what could we do if aliens decided Mars looked good.
Also i think if aliens were to invade, they would not be to far in advance of technology from us, reason being if they were so far advanced they would
not need to invade they could terra-form Mars with less hassle involved.
This was recently discussed on a documentary program we could mine the asteroid belts with radars and microwave and laser weapons, what we really need
are planes that can fly in space with lasers and maybe EMP's, thing is Aliens can do alot damage on day 1 just by attacking our Oceans causeing tidel
wave damage all round the globe, let alone if they decide to nuke or worse the land where people live, dont forget bio weapons too.
I think once rail guns and lasers become operational on a wide scale by alot of major countrys we might stand a better chance of hurting an invasion
force but at the moment we would really struggle i think.
edit on 18-10-2011 by blobby because: adding more text
edit on 18-10-2011 by blobby because: text change
on 18-10-2011 by blobby because: another text change