Time to Leave
Hawking has SPOKEN:
Returning to a theme he has voiced many times before, the Cambridge University cosmologist said today that space-rockets propelled by the kind of matter/antimatter annihilation technology popularised in Star Trek would be needed to help Homo sapiens colonise hospitable planets orbiting alien stars.
I love the Star Trek bit.
I know, I know. I’m being a hypocrite. I dislike intentionally slanted reporting when it comes to political matters, so I should object to this, as well. Putting Star Trek there serves no purpose other than to make Hawking’s suggestions look silly. It’s not fair, and not necessary.
Plus his words look odd enough without any journalistic “help.”
The long-term survival of the human race is at risk as long as it is confined to a single planet. Sooner or later, disasters such as an asteroid collision or nuclear war could wipe us all out. But once we spread out into space and establish independent colonies, our future should be safe.
There isn’t anywhere like the Earth in the solar system, so we would have to go to another star.
If we used chemical fuel rockets like the Apollo mission to the moon, the journey to the nearest star would take 50,000 years. This is obviously far too long to be practical, so science fiction has developed the idea of warp drive, which takes you instantly to your destination. Unfortunately, this would violate the scientific law which says that nothing can travel faster than light.
However, we can still within the law, by using matter/antimatter annihilation, and reach speeds just below the speed of light. With that, it would be possible to reach the next star in about six years, though it wouldn’t seem so long for those on board.
First off, why should we expect to exist after some asteroid collision?
And secondly, how does this work?
He told BBC Radio 4’s Today programme that scientists still have “some way to go” to reach his prediction in his bestselling A Brief History of Time that mankind would one day “know the mind of God” by understanding the complete set of laws which govern the universe.
This set of laws, which will probably rely on theory that requires more than three dimensions of space and one of time, could be uncovered within 20 years, not least because next year the giant LHC atom smasher will go into operation in the CERN nuclear physics laboratory in Geneva to provide new information for that quest by simulating conditions not seen since the birth of the universe as well making antimatter in a special factory.
Sometimes I have a hard time telling where science stops, and the science fiction begins. Maybe it’s because they look so much alike in this instance.
