Three students have won the chance to have science experiments they created carried out by astronauts in space.
The students won an international competition called the YouTube Space Lab Contest. Last October, students around the world aged 14 to 18 were invited to come up with ideas for experiments that could be performed on the International Space Station.
The space station is a satellite that orbits the Earth. It includes a research laboratory where astronauts from the United States, Russia, Japan, Europe and Canada conduct experiments. Because there is no gravity on the space station, they are able to do experiments they could not do on Earth.
For the contest, students had to make a video explaining their hypothesis – the idea they wanted to test – and the method for doing the experiment. Then they posted the videos on YouTube.
Winners were chosen by people voting on YouTube, and by a panel of judges that included scientists, teachers, astronauts and journalists.