The three types of friction and the three laws of motion.
Fluids can be categorized in two ways; "compressible fluids and incompressible fluids" and "newtonian and non Newtonian fluids".
The first exoplanet placed in the super-Earth category, discovered on the 13th of June 2005. It’s located in the constellation of Aquarius, around 15 light-years away. The exoplanet orbits the red dwarf star Gliese 876, being one of three other exoplanets orbiting the same star.