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- altitude
- archaeoastronomy
- Astronomy
- azimuth
- azimuth-angle coordinate system
- binding energy
- brightness
- celestial equator
- classical mechanics
- collapse
- conjunction
- coordinate system
- Copernicus
- cross-section
- declination
- deferent
- ecliptic
- elongation
- epicycle
- equatorial coordinate system
- equinox
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- formulae
- Galileo
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- gravity
- greek astronomy
- Heisenberg uncertainty principle
- heliocentric
- Hipparcus
- HUP
- hydrostatic equilibrium
- Isaac Newton
- Kelvin-Helmholtz timescale
- Kepler
- Kepler's Laws
- kinetic energy
- luminosity
- Maxwell-Boltzmann distribution
- mechanical energy
- meridian
- mometum
- Nebra skydisk
- neutrino
- Newton's laws
- opacity
- opposition
- Planck's constant
- Plato
- position
- precession
- proper motion
- Ptolemy
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- radial velocity
- radiation pressure
- Rayleigh criterion
- resolution
- right ascension
- sidereal period
- sidereal time
- skydisk
- solar time
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- stonehenge
- synodic period
- tangential velocity
- transverse velocity
- Tycho Brahe
- Virial theorem
- zenith
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Tag Archives: luminosity
Solar Model
The Sun, a typical main-sequence star of spectral class G2, with a surface of composition X = 0.73 (mass fraction of hydrogen) and Z = 0.02 (mass fraction of metals). Current estimated age: 4.52e9 years. The standard solar model applies physical stellar … Continue reading
Magnitude
Apparent magnitude (m): Apparent “brightness” of a star, as seen from Earth. Hipparcus first measured it, using a scale from 1 (brightest) to 6 (dimmest). Note that smaller values correspond to brighter starts! This scale was adopted and extended in … Continue reading
The Quantum Red Pill Blog 