ESA astronaut Tim Peake shows how to draw blood for research on the International Space Station. Researchers often request samples before, during and after a spaceflight to examine differences.
The tubes of blood are put in a refrigerated centrifuge and then stored in the International Space Station’s –80°C freezer called MELFI for later analysis on Earth.
Read more about the experiments Tim Peake took part in: http://www.esa.int/Our_Activities/Human_Spaceflight/Principia/Body_and_mind
Read the full experiment at http://www.stevespanglerscience.com/experiment/instant-freeze-soda-ice It might have happened to you… You put a bottle of soda in the freezer for a few minutes just to get it ice cold. When you take the soda out of the freezer, it’s still a liquid (nothing unusual has happened just yet). However, the second you twist off the cap, the soda instantly freezes! The process is amazing to watch… but it’s a real bummer if you were thirsty (because it’s tough to suck ice out of the bottle). This is a great illustration of how carbon dioxide can lower the freezing point of water. Get some ice, some salt and some plastic bottles of soda water and try this very cool science demo.