Definitions - e
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eccentricity -
eclipse -
ecliptic -
effective dose -
efficiency -
eigenvalue -
eigenvector -
elastic collision -
electricity -
electromagnetic energy -
electromagnetic force -
electromagnetic radiation -
electromagnetic waves -
electron -
element -
ellipse -
emission -
enceladus -
energy -
equation -
equator -
equilibrium -
escape velocity -
europa -
exact equation -
exponent -
exponential -
extrasolar planet - A planet that is found outside of our solar system.