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.