we need to be able to get off of her
better
so first thing we need to work out is
how to very efficiently get off of Earth
then we can start working out how to
efficiently get on to Mars if you want
to get off the planet Earth today you
got one option build and fly a rocket
and a rocket is basically a device that
pumps a ton of energy down one way that
moves a rocket the other way and its way
of fighting gravity the main expense of
spacecraft is building the booster
itself and right now we don’t reuse
boosters spacex is trying desperately to
get that going
the difference between a reusable system
versus an expendable system is gonna be
about a factor of a hundred imagine if
you took a flight from New York to
London and then at the end of the flight
they threw away the plane imagine how
much tickets would have to cost in order
for the airline to make money
it’d be like hundreds of millions of
dollars per seat because they’re
throwing away a multi-billion dollar
aircraft every time they fly what really
matters is being able to send a large
there were people like tens of thousands
if not hundreds of thousands of people
and millions of tons of cargo I
conservatively estimate you’re gonna
need a spaceship that weighs about a
million kilograms you need about 10
times the NASA ship in fuel so now
you’re looking at 10 million kilograms
put into low-earth orbit to get all of
that crap up into low-earth orbit would
cost phenomenal amounts of money for our
friends ISS cost I think it was about a
hundred and sixty five billion dollars
to put 380,000 kilograms I mean you do a
math on that it was it was a lot of
money per kilogram if you go to Congress
right now and say like well it’s gonna
cost us two hundred billion dollars
they’re gonna say like well I think
we’re gonna not do if you go to them and
say like oh well now thanks to a better
booster technology it will now cost 10
billion dollars well they’re like we
spend that much on ISS every year we’re
not gonna go anywhere or do anything
until we drive down the price to
low-earth orbit that is the key to
absolutely everything then we can start
working out how to
efficiently get on to Mars
better
so first thing we need to work out is
how to very efficiently get off of Earth
then we can start working out how to
efficiently get on to Mars if you want
to get off the planet Earth today you
got one option build and fly a rocket
and a rocket is basically a device that
pumps a ton of energy down one way that
moves a rocket the other way and its way
of fighting gravity the main expense of
spacecraft is building the booster
itself and right now we don’t reuse
boosters spacex is trying desperately to
get that going
the difference between a reusable system
versus an expendable system is gonna be
about a factor of a hundred imagine if
you took a flight from New York to
London and then at the end of the flight
they threw away the plane imagine how
much tickets would have to cost in order
for the airline to make money
it’d be like hundreds of millions of
dollars per seat because they’re
throwing away a multi-billion dollar
aircraft every time they fly what really
matters is being able to send a large
there were people like tens of thousands
if not hundreds of thousands of people
and millions of tons of cargo I
conservatively estimate you’re gonna
need a spaceship that weighs about a
million kilograms you need about 10
times the NASA ship in fuel so now
you’re looking at 10 million kilograms
put into low-earth orbit to get all of
that crap up into low-earth orbit would
cost phenomenal amounts of money for our
friends ISS cost I think it was about a
hundred and sixty five billion dollars
to put 380,000 kilograms I mean you do a
math on that it was it was a lot of
money per kilogram if you go to Congress
right now and say like well it’s gonna
cost us two hundred billion dollars
they’re gonna say like well I think
we’re gonna not do if you go to them and
say like oh well now thanks to a better
booster technology it will now cost 10
billion dollars well they’re like we
spend that much on ISS every year we’re
not gonna go anywhere or do anything
until we drive down the price to
low-earth orbit that is the key to
absolutely everything then we can start
working out how to
efficiently get on to Mars
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