Astrophysics and Cosmology
Completion requirements
Pori drwy'r eirfa gan ddefnyddio'r mynegai hwn
Arbennig | A | B | C | CH | D | DD | E | F | FF | G | NG | H | I | L | LL | M | N | O | P | PH | R | RH | S | T | TH | U | W | Y | Y CYFAN
U
UltravioletElectromagnetic radiation with wavelengths shorter than visible light. | |
Universal gravitational constantthe constant used in Newton's Law of Universal Gravitation. | |
UniverseEverything that exists, including all matter, energy, space, and time. | |