The possibility outer-space/being from another planet life has been discovered came after living bacteria was found on the surface of the space station.
Anton Shkaplerov, a flight engineer who is now planning his third trip to outer-space said that scientists found the living bacteria while collecting samples on the surface of the station.
He said: "Bacteria that had not been there during the launch of the ISS module were found on the swabs."
The space traveler explained that this meant that the bacteria must have landed on International Space Station once it was already in space.
He said: "So they have flown from somewhere in space and settled on the outside of the hull."
Mr Shkaplerov added the samples are now being studied to find out more about them but that they seem to be safe.
The samples of the bacteria were collected during spacewalks from the International Space Station.
The unexpected discovery was made after the space travelers used cotton swabs on the external surface of the man-made structure.
They especially took probes from places where fuel wastes were discharged while the engines were in operation and in places where the station's surface was more unknown.
However, there is also a chance that the bacteria managed to survive the tricky trip from Earth.
There have been examples of bacteria overcoming the sharp swings in temperature during the trip.
Sharp swings of temperature happen during a spaceship's trip from Earth to outer space.
emperatures can change from as high as 150 degrees celsius to -150 celsius.
While the bacteria is being watched/supervised on Earth in order to find out more about the potential (not a normal part of something/from a far-away place) substance, it is also possible that the bacteria was brought to space on PC tablets onboard the Space Station used for analysis purposes.