Celestial Phenomena and Points


 * aberration
 * absorption lines
 * accretion disk
 * altitude
 * annular eclipse
 * antapex
 * anthelion
 * apex
 * aphelion
 * apocenter
 * apogee
 * arc
 * arroyo
 * asterism
 * atmosphere
 * atmospheric layers
 * aureole
 * aurora
 * axis
 * azimuth
 * basin
 * Becklin-Neugebauer object
 * Big Dipper
 * biosphere
 * black hole
 * blue moon
 * blue shift
 * brightline spectrum
 * canals
 * carbonaeceous chondrites
 * celestial equator
 * celestial sphere
 * chondrite
 * chromosphere
 * collision
 * comet tail
 * conjunction
 * constellation
 * corona
 * cosmic noise
 * cosmic rays
 * crater
 * crescent moon
 * declination
 * deferent
 * dust
 * eclipse
 * ecliptic
 * ecosphere
 * electromagnetic spectrum
 * emission lines
 * equinox
 * exosphere
 * extragalactic
 * first point of Aires
 * flash spectrum
 * flocculus
 * force field
 * Fraunhofer lines
 * full moon
 * galactic equator
 * galactic noise
 * galactic pole
 * geomagnetic axis
 * gibbous moon
 * gravitation
 * gravitational collapse
 * halo
 * horizon
 * interacting galaxies
 * intercrater plain
 * intergalactic
 * intergalactic medium
 * interplanetary
 * interplanetary medium
 * interstellar cloud
 * ionosphere
 * lines of force
 * Little Dipper
 * luminosity
 * lunar
 * lunar eclipse
 * lunar occultation
 * magnetic field
 * magnetosphere
 * mare
 * Mare Imbrium
 * meridian
 * Messier object
 * meteor shower
 * microwave background radiation
 * nadir
 * new moon
 * nodes
 * Northern Lights
 * nutation
 * occultation
 * Olympus Mons
 * optical double
 * orbit
 * Orientale basin
 * outer space
 * outgassing
 * parhelic circle
 * penumbra
 * perigee
 * perihelion
 * perturbation
 * phase
 * photosphere
 * plasma
 * polar cap
 * precession
 * primordial black hole
 * proper motion
 * quarter moon
 * radiant
 * radio wave
 * ray
 * redshift
 * regolith
 * retrograde motion
 * rift valley
 * ring plain
 * ring system
 * Saturns rings
 * Seeing
 * semimajor axis
 * solar
 * solar corona
 * solar eclipse
 * solar flare
 * solar nebula
 * solar wind
 * solstice
 * space
 * space velocity
 * spectrum
 * spicule
 * spiral arm
 * star cloud
 * sunspot
 * surface temperature
 * synodic month
 * syzygy
 * Tharsis ridge
 * tidal friction
 * tides
 * transmit
 * umbra
 * Van Allen radiation belts
 * vertical circle
 * visible spectrum
 * waning moon
 * waxing moon
 * zenith
 * zodiacal light
 * zone
 * zone of avoidance