Astronomy Glossary

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There are currently 2 names in this directory beginning with the letter E.
E
elliptical galaxy
A type of galaxy with an approximately ellipsoidal shape and a smooth, nearly featureless appearance. They are one of three main morphological classes of galaxy, along with spiral and lenticular galaxies.
elongation
The angular separation between the Sun and an orbiting body, such as a planet, as it appears from Earth.