Kepler's laws of planetary motion (开普勒定律); Newton's laws of motion (牛顿运动定律); Angular momentum (角动量守恒定律); Orbital elements (軌道根數)
Distance measurement: Ia
Videos: Application of orbital mechanics
Universe (Cosmos, Cosmology, Astronomy):
Big bang, Visible universe; Gravity: Universal gravitation; Dark energy
Stellar evolution: Hertzsprung–Russell diagram, Main sequence
Hubble deep fields (HDF): HDF-N, HDF-S, HUDF
Convert: NASA, boulter, Miami, Earth Point, Address<->Long/lat,
Formation of stars and their fate
Hertzsprung–Russell diagram (赫羅圖), 行星未來的命運; The Life and Death of Stars: White Dwarfs, Supernovae, Neutron Stars, and Black Holes; The Lifetime Of A Star; Birth of the Earth
Institutions:
IAU (International Astronomical Union):
NASA (National Aeronautics and Space Administration); Nat Radio Astronomy Observatory: Very Large Array
Observatories:
Radio astronomy: Michelson Interferometer, Karl G. Jansky Very Large Array
Telescopes:
Coelostat,
McDonald, Griffith LA, Mauna Kea, Paranal,
Clear Sky Chart; International Dark Sky Association (IDA): Community
Scientists:
Edwin P. Hubble: Beyond the Milky Way; The redshift
Astrology: Horoscope, Chronology
Videos