One day the last star will die
and the universe will turn dark forever,

it will probably be a red dwarf;
a tiny kind of star

that is also one of our best bets
to find alien life,

and might be the last home of humanity
before the universe becomes uninhabitable.

So what do we know about them?

And why are they our last hope?

At least 70% of the stars in the Universe
are red dwarfs.

They are the tiniest stars out there,

with only about 7 to 15 percent of the
mass of our sun.

Not that much bigger than the
planet Jupiter,

which is still huge, though.

They are also very demn.

It is impossible to see them with
the naked eye.

You have never seen one in the nightsky.

Even with all our technology we can only
clearly absorve red dwarfs in our neighbourhood.

Approximately 20 of the 30 stars closest to 
Earth are red dwarfs.

Like all stars, red dwarfs fuse hydrogen
into helium.