Astronomy Word of the Day

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

Satellite

Screw the Pooch

Secular motion

Selenocentric

Shell Burning

Sidereal Time

Singularity

Sojourner Truth

Solstice

Spectroscopic binaries

Standard candles

Sublimation

Subparhelic circle

Syzygy