Astronomy¶
Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos.
Contents:
- Astronomy (Relativistic)
- Absolute magnitude of stars from apparent magnitude and distance
- Approximate lifetime of stars located on the main sequence
- Change in apparent magnitude from distance
- Latitude from zenith angle and declination
- Lifetime of star on main sequence
- Luminosity of star from absolute magnitude
- Luminosity of Sun in future from luminosity in present
- Luminosity of Sun in past from luminosity in present
- Object’s angular altitude in upper culmination
- Radius of planetary orbits from number
- Ratio of luminosities from ratio of masses of stars
- Speed of galaxy from distance to galaxy