ESA’s ‘Soret Coefficient in Crude Oil’ experiment will test diffusion effects in high-pressure crude oil. Consisting of six sturdy cylinders, each containing a millilitre of crude oil, pressurised to 400 times our normal atmospheric level, SCOO is being prepared to fly on China’s SJ-10 Shi Jian spacecraft near the end of 2015, along with around 20 other experiments.