- ASTRONOMY FOR YOUNG AUSTRALI
- DAILY MOTION OF THE EARTH.
- ROTUNDITY OF THE EARTH.
- SIZE OF THE WORLD
- THE EARTH NOT QUITE ROUND.
- ANNUAL MOTION.
- THE SEASONS.
- PRECESSION OF THE EQUINOXES.
- FIXED STARS NOT FIXED.
- DISTANCES AND SIZES OF THE S
- CONSTELLATIONS.
- DOUBLE STARS.
- PERIODICAL AND VARIABLE STAR
- MILKY WAY.
- THE NEBUL?
- THE SUN AND PLANETS.
欢迎访问英文小说网