Attack of the space worms!
Okay, they're actually from earth, and we put them in space.
Scientists sent 4,000 tiny worms up to the international space station.
Even with no gravity the worms were able to reproduce for 12 generations in three months.
Since the worms do share some genetic traits with humans, it shows how multiple generations of people could survive in space.
We're not exactly sure how worms are similar to humans but the scientists seem pretty happy with the results.
"We have been able to show that worms can grow and reproduce in space for long enough to reach another planet, and that we can remotely monitor their health.
Ultimately, we are now in a position to be able to remotely grow and study an animal on another planet."
Next stop… Mars!!
[Image via Getty Images.]