Comet-like objects crossing the Milky Way could carry bacteria across thousands of light years and spread life around the galaxy, scientists believe.
Experts say the discovery last year of the asteroid 'Oumuamua - the first interstellar object ever seen in the solar system - has raised hopes of discovering life that has been transported across space.
In a new study researchers said the entire Milky Way could be exchanging life 'across vast distances' and that microbes might be able to withstand the long journeys.
The paper's authors said bacteria could potentially survive for millions of years and even some more complex organisms had managed to stay alive in the vacuum of space.
This is not a new idea, BTW. To read more, click here.