September 11, 2012

Image Caption: The jumping spider investigation, as part of the International Space Station YouTube Space Lab contest, includes the red-backed spider (left) and zebra spider (right) species. (BioServe). Credit: NASA

Several young researchers were incredibly excited when the latest Japanese cargo ship arrived at the International Space Station, in late July. Along with the usual food, clothing, and science investigations, the spacecraft delivered the two global YouTube Space Lab winning entries.

Dorothy Chen and Sara Ma (from Troy, Mich.) and Amr Mohamed (from Alexandria, Egypt) won this opportunity to do research in the orbiting laboratorys microgravity environment while attending high school.

These young scientists are working on some interesting hypotheses involving jumping spiders adaptation abilities, and how microgravity might affect the anti-fungal properties of Bacillus subtilis (also known as B. subtilis), which are naturally occurring bacteria.

Astronaut Sunita Williams, NASA flight engineer, is conducting the investigations aboard the station. The student experiments are scheduled to stream live via video from the space station on the YouTube Space Lab website Sept. 13, at 9:30 a.m. CDT.

Mohameds Salticus scenicus, or zebra spider, research looks at whether jumping spiders, like the zebra and red-backed species, can adapt their hunting abilities to microgravity. Jumping spiders do not build webs for catching their food. These particular spiders hunt using their excellent vision to track and stalk prey, jumping and striking with a lethal bite similar to cats hunting mice.

I have always been fascinated by science because with a handful of equations, I can explain the world around me, said Mohamed in his Meet the Winner YouTube video. The idea of sending an experiment to space is the most exciting thing that I have ever heard in my life.

Chen and Ma were inspired by previous Salmonella studies done aboard station, proving this type of bacteria grown in microgravity becomes more virulent. They are testing this theory on B. subtilis, to see if these bacteria will have increased anti-fungal properties when compared to the same bacteria produced on Earth. Their testing procedures involve introducing various nutrients and compounds, in particular phosphates and nitrates, separately to see if these additives affect growth and anti-fungal potency. If their hypothesis is correct, results may lead to stronger probiotics (as B. subtilis is highly stable in harsh environmental conditions), and increased knowledge concerning how bacteria cause disease.

In their Meet the Winners YouTube video, Ma said, When we first started brainstorming, we definitely wanted to do something to impact the human race. Its so cool how with science, everything relates to each other. Physics is used in chemistry, and chemistry is used in biology, and so on; everything is interrelated and its just really neat to find those relations. Chen added, The idea that something you made, something thats your experiment, being sent up into space and actually becoming a reality is pretty incredible.

View post:

Student Biology Investigations Stream Live On YouTube Space Lab