Issuu on Google+



From Earth to the planet “ESO0939” that was recently discovered. It’s 22 light years away. That’s about 129 trillion miles. Using our current technology, in Earth years it will take us around 300,000 years to reach it.

The Earth is doomed,

and the only question is

how long humanity

has left.

Fortunately, we have options:

in the past few years

there’s been a flurry

of potentially habitable planets discovered.

In June,

German astronomers

found three

planets relatively near to us

that orbit

around a star

at a distance

that suggests they could have

liquid water

and therefore life.

To learn more

about our future

on other planets,

we talked to Daniel Berleant.

When I was young,

we hadn’t

detected any planets

outside the

solar system

that could be habitable,

and the thinking

was there probably

weren’t very many.

That’s part of this kind of

human-centric viewpoint that

we’ve had for a long time.

We used to think

that the sun


around the Earth

and then we discovered that

we revolved around the sun.

It’s good for us to think about

settling humanity

on other planets

because if something goes wrong

terribly wrong

on Earth,

we’ve hedged our bets.

If the sun exploded,

if there were

humans colonies

on distant planet,

we would survive.

The more extraterrestrial bodies we’re inhabiting,

the better.

Having said that,

of course it’s going to be

a lot easier to colonise, like,

the moon

or Mars.

Traveling outside the


system gets to be

a little tricker.

The planets they’ve just discovered are

22 light years away,

it’s very far

about 129 trillion miles.

We don’t know how to build

ships yet

that would go

fast enough

to get people there

in a reasonable time.

One of the positive things

about really fast travel

as in travel near the speed of light

is that time

on the spaceships

would go slower.

So although it might take

22 or many more years

of Earth-time to get there,

on the spaceship,

it could take less.

The problem is,

it could be

really hard to

transport lots

and lots of people.

We could maybe

trasport a few people to start

a colony

but if we wanted to

reduce the

population problem

on Earth

by moving millions of

people to the exsisting planets

it would take

so long that it would be

of less intrest to people

here on