Why NASA Has Been Shipping Bacteria to the ISS

The International Space Station (ISS) has been playing host to many different kinds of microbes as part of a larger study to figure out how bacteria reacts to a microgravity environment and cosmic radiation.

The International Space Station (ISS) plays host to many different kinds of experiments, which helps NASA researchers understand how future astronauts might live in deep space. But one year-long experiment has been looking at how bacteria survives in a microgravity environment and react to cosmic radiation. The results so far have been quite interesting.

Researchers at the ISS are swabbing the desk of the space station to see what kind of microbes are present in their enclosed environment. It's all part of the Microbial Tracking-1 study. The goal: to see how these microscopic stow-aways grow and change over time on the ISS. Samples are sent back to Earth research labs for further testing.

“Results that derive from such studies will enable NASA to better understand the microbiome of the space station, how it evolves over time, and could provide solutions in mitigating future risks associated with crew health and mission integrity,” said Fathi Karouia, Microbial Tracking-1 project scientist, at NASA’s Ames Research Center in Moffett Field, California.

Because the astronauts at the ISS live in a closed system, preparing for any possible health risks will help assure the future success of deep space missions.

Humans naturally play host to a world of microbes, so astronauts have already brought bodies of them the minute they stepped on board the ISS. But other parts of the study have gone so far as to ask citizen scientists to collect microbes from sports teams, historical monuments, museums, spacecraft, and schools, and ship them to the ISS to see what would happen. 

Credit: CC BY 4.0

Of the 48 strains they sent to the ISS, researchers found only Bacillus safensis took to becoming a spacefaring bacteria, growing 60 percent better in space than on Earth. Researchers have no idea why this particular strain thrived.

After a year of sending and sampling microbes on the ISS, the study is coming to an end. The information gained from this research will influence how NASA engineers a successful mission to Mars. It could lead to methods that will suppress the presence of certain microbes, while encouraging the growth of others. We're learning how to engineer the best conditions for a long voyage.


Photo Credit: NASA / JPL

Natalie has been writing professionally for about 6 years. After graduating from Ithaca College with a degree in Feature Writing, she snagged a job at PCMag.com where she had the opportunity to review all the latest consumer gadgets. Since then she has become a writer for hire, freelancing for various websites. In her spare time, you may find her riding her motorcycle, reading YA novels, hiking, or playing video games. Follow her on Twitter: @nat_schumaker

Being a father to a school-age girl makes men less sexist, study suggests

The findings are based on a phenomenon known as the "Mighty Girl Effect."

Culture & Religion
  • The study tracked the responses of more than 5,000 men over the course of a decade.
  • The results showed that men who lived with daughters were less likely to hold traditional views on gender relations and roles.
  • This effect seemed to be strongest as the daughters entered secondary-school age.
Keep reading Show less

‘A rare sight’: Astronaut snaps incredible photo of 5 spaceships

The photos were taken the same day as Russian cosmonauts investigated a mysterious hole discovered in one of the craft.

Alexander Gerst
Surprising Science
  • The spacecraft belong to Russia and two private American aerospace companies.
  • Six astronauts are currently aboard the International Space Station to conduct a variety of experiments.
  • On Monday, Russian cosmonauts conducted a spacewalk to investigate the nature and cause of a mysterious 2-millimeter-wide hole in a Russian spacecraft.
Keep reading Show less

Technology will kill the 9-to-5 work week, says Richard Branson

The billionaire entrepreneur predicts the rise of technology will soon force society to rethink the modern work week.

(Photo by Rob Kim/Getty Images)
Technology & Innovation
  • Branson made the argument in a recent blog post published on the Virgin website.
  • The 40-hour work week stems from labor laws created in the early 20th century, and many have said this model is becoming increasingly obsolete.
  • The average American currently works 47 hours per week, on average.
Keep reading Show less