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Our Solar System | 5 |
Fig. II. Outer Planets.
have for the planet what we had for the Sun,—direction and distance at a given time. Dotting these data upon the apparent path, Kepler proved
Our Solar System | 5 |
Fig. II. Outer Planets.
have for the planet what we had for the Sun,—direction and distance at a given time. Dotting these data upon the apparent path, Kepler proved