Cafodd yr arbrofion hyn eu cynnal ar ran ymchwilwyr o bedwar ban byd, ac roedden nhw’n cynnwys ceisio tyfu pibelli gwaed a chrisialau protein, a defnyddio ffwrnais i doddi ac i oeri aloion metel wrth iddyn nhw nofio’n rhydd yn yr awyr.
Tim visited Techniquest in Cardiff Bay to give school children from across Wales a first-hand account of life in space. A live link to a SkillsCymru Careers event in the Motorpoint Arena meant that over 1,000 more students heard Tim talk about the important science experiments he conducted during his mission for researchers across the planet, including trying to grow blood vessels and protein crystals, and using a furnace to melt and cool metal alloys as they float in mid-air.