Answer | Crossword Clue |
---|---|
ephemerist | one who studies the daily motions and positions of the planets |
ephemerists | EPHEMERIST, one who studies the daily motions and positions of the planets |
orreries | apparatus for representing the positions, motions, and phases of the planets, satellites, etc., in the solar system |
orrery | apparatus for representing the positions, motions, and phases of the planets, satellites, etc., in the solar system |
astrodynamicist | one who studies astrodynamics, the science of the motion of bodies in outer space and the forces that act on them |