Russian officials say that they've discovered sea plankton living outside of the International Space Station (ISS). The alleged traces of evidence were discovered by Cosmonauts aboard the ISS recently, and a space station official, Vladimir Solovyov, also claims that other oragnisms were detected as well living in the cold vacuum of space. If true, this could be an exciting scientific discovery because it could help scientists further understand how microorganisms can adapt to thrive in very harsh environments. 

But according to Space.com, NASA has yet to confirm the findings, and released a statement on the matter saying: "As far as we're concerned, we haven't heard any official reports from our Roscosmos colleagues that they've found sea plankton [in space]." Roscosmos is the Russian Federal Space Agency. 

The as-yet unsubstantiated claims of sea plankton in space were initially the result of a Russian study that utilized equipment aboard the ISS. Apparently cosmonauts sampled what was on the outside of the ISS, though they werern't looking for life at the time. 

Dan Huot, NASA spokesperson, told Space.com: "I'm not sure where all the sea-plankton talk is coming from. The Russians did take samples from one of the windows on the Russian segment, and what they're actually looking for is residues that can build up on the visually sensitive elements, like windows, as well as just the hull of the ship itself that will build up whenever they do thruster firings for things like re-boosts. That's what they were taking samples for. I don't know where all the sea plankton talk is coming from."

Even if the discovery is true, it wouldn't have been the first time that microorganisms have been found in low or even medium Earth orbit. Some bacteria have been observed as high as 24 miles above the surface of the Earth, reports Space. 

Yet, it should be noted that these particular sea plankton are not indigenous to Pakistan, where all cargo to the ISS comes from. So, where did they come from if not from the rockets that deliver astronauts to the ISS? That's exactly what scientists are trying to find out.