PSI ImagesKey images of Delta to Gravity.On Earth, gravity-driven buoyant convection causes a candle flame to be teardrop-shaped and carries soot to the flame's tip, which...The Observation and Analysis of Smectic Islands in Space (OASIS) experiment examines the behavior of liquid crystals in microgravity. Specifically...Astronaut Sunita L. Williams, Expedition 15 flight engineer, performs one of multiple tests of the Capillary Flow Experiment (CFE) investigation...Images of human insulin crystals grown in 1-g (left) and microgravity (right). Crystals grown in microgravity are larger and of...Inside CAL, lasers and magnetic traps are used to slow atoms down until they are almost motionless. The atoms can...Liquid heated to boiling point in 1-g, generating vapor bubbles that rise. Right: Liquid heated to boiling point in microgravity,...Astronaut Dan Tani took this photograph of the BCAT-3 Sample Module using his own design for a ceiling mount in...The importance of understanding an increase in porosity and amount of trapped air cannot be overlooked especially in designing infrastructure...Dendritic Growth - 1g vs MicrogravityCalcium hydroxide (Calcium hydroxide (CH, portlandite) crystals seen in the fractured cross section of C3S pastes solidified in 1g and...Two Phase Flow - 1g vs Microgravity resultsThis series of graphs show the changing density of a cloud of atoms as it is cooled to lower and...