Ecliptic Plane by Ensign February 20, 2021 0 The ecliptic plane, also called orbital plane, is the imaginary line that traces the Sun's apparent path in the sky. ...
Ejecta by Ensign February 20, 2021 0 Material from beneath the surface of a body such as a moon or planet that is ejected by an impact ...
Electromagnetic Radiation by Ensign February 20, 2021 0 Another term for light. Light waves created by fluctuations of electric and magnetic fields in space.
Electromagnetic Spectrum by Ensign February 20, 2021 0 The full range of frequencies, from radio waves to gamma waves, that characterizes light.
Elevation (altitude) by Ensign February 20, 2021 0 Elevation or altitude is the vertical angle an object makes with the horizon.
Ellipse by Ensign February 20, 2021 0 A closed plane curve generated in such a way that the sums of its distances from the two fixed points ...
