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>> Professor Stephen Hawking
is arguably our greatest
living cosmologist.
Struck down in his 20's
by a progressive
motor neuron disease,
he's entirely paralyzed, and
can only communicate using a
speech synthesizer.
But when Professor Hawking
speaks, NASA listens.
>> [Computer voice] I
fear for our future.
Our planet Earth is threatened
with an ever-expanding
population,
and only finite resources.
We need a plan B.
If our species is
to survive the next 100
years, let alone 1,000,
it is imperative we voyage out
into the blackness of space
to colonize new worlds
across the cosmos.
The ISS is pioneering
space exploration.
Without this knowledge, travel
into deep space is impossible.
Within 50 years, I have no
doubt there will be settlements
on the moon, and by
the end of the century,
I truly hope humans
will be living on Mars.
I think the work on the ISS
will take a new generation
of human space explorers
out into our solar
system and beyond.
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