travel a billion light years and for what?
In the movies why do aliens always travel across space and time just to anal probe country bumkins and perform terrible experiments? Don't they have anything better to do in the whole universe?
shareNot that I personally believe in aliens visiting Earth to do experiments etc. on humans, but your understanding of the physics involved needs adjusting.
The only constant in the Universe is the speed of light, also known as c. Time and space are not fixed but flexible. If you travel at a speed very near c or c itself (assuming this is possible for an advanced alien civilization), time essentially slows down, but only for the individuals doing the travel at the speed close to c. If you travel at c, time basically stops but only for you. So, a trip of lightyears would be nearly instantaneous. For those you left behind and for those at the destination of your travel, time has progressed as normal.
So, while it would make no sense to travel such enormous distances in a human perspective with the practical propulsion technologies known to us, the same does not apply for someone able to travel at lightspeed or very close to it.
.. and any sort of a particle that has mass requires infinite energy to achieve light speed, according to current physics; so no time-travel, or light-speed travel for anyone in the universe yet (and there's a lot more to it).
Why can light travel at light-speed, is a whole different question:
http://answers.yahoo.com/question/index?qid=20060925105535AAjlwIo
http://math.ucr.edu/home/baez/physics/ParticleAndNuclear/photon_mass.html
http://van.physics.illinois.edu/qa/listing.php?id=1424
99% of new films are garbage
What if travling 1 billion miles was as effortless as us driving to a zoo or to our backyard? Would mean nothing to us. Some people go to the zoo was peace and quiet, some go to see the animals, some go to interact with the animals, and a few go to do bad things to the anmials.
WTF?
.. and any sort of a particle that has mass requires infinite energy to achieve light speed
Put another way, every single galaxy, star, planet, molecule, atom, quark and electron in the universe turned to pure energy (a good trick if you could do it, as the energy-converting influence would also need to be faster than light) won't accelerate a massive object to the speed of light.
The restitution of life is no great feat. A variety of deaths may well enter into your punishment share
thoso said: "time essentially slows down ... for the individuals doing the travel at ... c, If you travel at c ... a trip of lightyears would be nearly instantaneous"
Your understanding of special relativity and reference frames is incorrect.
However:
Based on my frame of reference sitting here on earth, depending on which star system the aliens departed from it would take thousands to millions of years for them traveling at the speed of light to reach me on earth. Meaning that also from their frame of reference on their home world, they would have no idea that I was going to exist on earth thousands to millions of years in their future, so for them to have knowledge to travel exactly to this solar system out of the entire universe would be highly unlikely.
And to further put a wrench in the works, nothing that has mass can travel at the speed of light. A space ship and the aliens inside it have mass. The only way the aliens could travel at the speed of light would be to convert themselves into a massless energy/wave. Which would essentially be impossible to do.
I REALLY dont want to get into the UFO debate but I feel like you are shorting yourself by thinking that the laws we think are 100% exactly the way we think they are, might be meaningless to a being that had a 13 billion head start.
I heard it once like this and im gonna butcher it:
Think of the 1% between humans and primates.
That 1% allows us to travel the heavens, splice atoms, and all sorts of things that a primate JUST CANNOT understand. Why, it would all be magic to him *IF* he could fully understand it!
Now think of 1% smarter than us!
We could not fathom the intelligence, the machinery, the ability of those beings. We would assume it was 'magic', or that they were 'gods' who had come to visit.
We could certainly understand 'alien beings/smarter than us' but if they left us a UFO and said we could reverse engineer it...what on Earth makes us think we could?!
And for that matter, how could we 'talk' to them or even understand them? We cannot talk to any creature thats shared this Earth with us since our beginning, why would we be able to communicate with them? We'd have to hope that with their intelligence, THEY would have a way to simplify things enough for us to understand.
Just my take on what you said...
Good points. During the past 200 years of our history people have made scientific discoveries which other people overlooked or thought of as being impossible. I have no doubt there is more to learn.
That is an excellent point & real food for thought.
share Why is every one dismissing interdemensional travel or warp drives.
You're an idiot.
share