Full Moon by Ensign February 20, 2021 0 The Full Moon is the when the entire face of the Moon is lit up.
Gal by Ensign February 20, 2021 0 Unit of gravity field measurement corresponding to a gravitational acceleration of 1 cm/sec.
Galactic Halo by Ensign February 20, 2021 0 The name given to the spherical region surrounding the center, or nucleus of a galaxy.
Galactic Nucleus by Ensign February 20, 2021 0 A tight concentration of stars and gas found at the innermost regions of a galaxy. Astronomers now believe that massive ...
Galilean Moons by Ensign February 20, 2021 0 The name given to Jupiter's four largest moons, Io, Europa, Callisto, and Ganymede. They were discovered independently by Galileo Galilei ...
Galilean satellites by Ensign February 20, 2021 0 The four large satellites of Jupiter so named because Galileo discovered them when he turned his telescope toward Jupiter Io, ...
Gamma rays by Ensign February 20, 2021 0 Electromagnetic radiation in the neighborhood of 100 femtometers wavelength.
Gamma-ray by Ensign February 20, 2021 0 The highest energy, shortest wavelength form of electromagnetic radiation.
