Astronomy

• absolute magnitude
• absolute zero
• albedo
• apparent magnitude
• armillary sphere
• astrobiology
• astrolabe
• astrology
• astrometeorology
• astrometric binary
• astrometry
• astronomer
• astronomical unit
• astronomy
• astrophotography
• astrophysics
• AU
• big bang model
• big crunch
• binary accretion model
• Bode's law
• Cassegrain reflector
• celestial mechanics
• Chandrasekhar limit
• chaos
• coelostat
• Copernican system
• coronagraph
• cosmogony
• cosmological principle
• cosmology
• cosmos
• coude telescope
• dispersion
• Doppler shift
• eccentricity
• ephemeris
• epicycle
• epoch
• ether
• expanding universe
• Galilean telescope
• Geiger counter
• Geiger-Muller tube
• Geocentric
• gnomon
• gravitational lensing
• gravity anomaly
• harmonic law
• heliocentric
• Hertzsprung-Russell diagram
• horizon system
• horoscope
• Hubble classification scheme
• image-intensifier tube
• interferometer
• Kepler's laws
• light hear
• light speed
• magnitude
• main sequence
• major axis
• mascon
• mass spectrometry
• mass-luminosity law
• monochromator
• New General Catalogue
• Newton's first law of motion
• Newton's law of universal gravitation
• Newton's second law of motion
• Newton's third law of motion
• Newtonian reflector
• NGC
• no boundary condition
• objective
• observable
• observatory
• orrery
• parallax
• parasec
• period
• period-luminosity relation
• photometry
• photomultiplier tube
• planetarium
• planetesimal
• plate tectonics
• Ptolemaic system
• pulsating universe theory
• quintessence
• radial velocity
• radio astronomy
• radio beam
• radio telescope
• reflector
• refractor
• right ascension
• roche limit
• Schmidt telescope
• Schwarzschild radius
• seismometer
• SETI
• sextant
• sideread
• sidereal period
• sidereal time
• signal-to-noise ratio
• singularity
• space velocity
• space-time
• spectral type
• spectrograph
• spectroheliograph
• spectroscopic parallax
• spectroscopy
• spectrum-luminosity diagram
• stargazing
• steady state model
• supermassive black hole
• telescope
• unanography
• unanology
• unanometry
• universe
• Very Large Array
• VLA
• white hole
• Widmanstaffen figures
• X-ray burster
• zodiac