• vacuum
• vacuum arc
• vacuum correction
• vacuum photocell
• vacuum spectrograph
• vacuum ultraviolet
• vacuum wavelength
• valence bond method
• valence force field
• valence theory of Heitler-London
• valence-type symmetry coordinates
• valence vibration
• valency
• valency electron
• valley
• Value
• van Allen belts
• Van der Waals forces
• van der Waals interaction
• vapor
• varactor diode parametric amplifier
• varactor parametric amplifier
• variability
• variable
• variable aperture
• variable component
• variable density filter
• variable magnetic star
• variable motion
• variable nebula
• variable profile antenna
• variable radio emission
• variable radio source
• variable radio star
• variable-rate drive
• variable-rate driving
• variable spacing
• variable spacing interferometer
• variable-speed drive
• variable-speed R. A. drive
• variable star
• variable star nomenclature
• variation
• variational sensitivity
• variation in light
• variations in brilliance
• variations in latitude
• variations in longitude
• varying density
• vascular envelope
• vascular F
• Vatican observatory
• vault of heaven
• V color index
• vector
• vector diagram
• vector model
• vector model for Stark effect
• Vegard-Kaplan bands
• vehicle
• veil
• vein
• velocity
• velocity component
• velocity dispersion
• velocity distribution
• velocity distribution diagram
• velocity field
• velocity measurement
• velocity model
• velocity of light
• velocity of light in vacuum
• velocity pattern
• ventilation
• ventilation and temperature-control system
• Venus
• Venusian
• Venusian ionosphere
• Venusian surface
• Venus observations
• Venus probe
• Venus radar work
• vernal equinoctial point
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• vernal equinox
• vernier
• vernier scale
• vertex
• vertex sphere
• vertical
• vertical circle
• vertical collimator
• vertical component
• vertical dial
• vertical incidence sounder
• vertical intensity
• vertical screw
• vertical slide
• very high frequency
• Very large array
• Very Large Telescope
• very long base-line interferometry
• very long photographic exposure
• very poor seeing
• very soft radiation
• very-stable receiver
• very strong field
• vibrating rotator
• vibration
• vibrational
• vibrational angular momentum
• vibrational constant
• vibrational energy
• vibrational level
• vibrational partition function
• vibrational perturbation
• vibrational quantum number
• vibrational structure
• vibrational temperature
• vibrational transition
• vibrational transitions
• vibration band
• vibration of image
• vibration-rotation band
• vibration spectrum
• vibrator
• vibronic
• vicinity
• Victor Blanco telescope
• video camera
• video spectrometer
• viewing angle
• viewing end
• viewing monitor
• vignetting
• vigorous contrast
• violation
• violet
• violet cut-off filter
• violet F
• violet shift
• virtual
• virtual focus
• virtual image
• virtual oscillator
• viscosity
• visibility
• visibility amplitude function
• visibility function
• visibility of eclipse
• visibility of occupation
• visibility phase
• visible aurora
• visible band
• visible disk
• visible hemisphere
• visible image
• visible light
• visible meteor
• visible nebula
• visible object
• visible radiation
• visible radio star
• visible range
• visible region
• visible side
• visible spectrum
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• visible star
• visible Sun
• visible sunspot
• visible to the naked eye
• visible universe
• visible wavelengths
• vision
• VISTA telescope
• visual acuity
• visual astronomy
• visual binary
• visual binary star
• visual classification
• visual double star
• visual estimate
• visual fatigue
• visual image
• visual isophotes
• visual knife-edge test
• visual light
• visual magnitude
• visual measuring device
• visual meteor
• visual method
• visual microscope
• visual nerve
• visual object
• visual objective
• visual observations
• visual photometer
• visual photometry
• visual purple
• visual range
• visual-ray picture
• visual refractor
• visual resolution
• visual scale
• visual seeing
• visual seeing estimate
• visual seeing scale
• visual sensitivity curve
• visual source
• visual star
• visual telescope
• visual tests
• visual tracking
• visual work
• visual zenith telescope
• visual zenith tube
• vitreous body
• vitreous humor
• VLBI
• V-magnitude
• Voigt function
• volcanic activity
• volcanic ash
• volcanic debris
• volcanic eruption
• volcanic explosion
• volcanic heat
• volcanic theory
• volcanic tremor
• volcanism
• volcano
• voltage
• voltage multiplier
• voltage pattern
• voltage-sensitivity pattern
• volume absorption
• volume shift
• volumetric specific heat
• vortex
• vortex field
• vortex flow
• vortex voyage
• vortices
• v/r-variable
• v/r-
• V system
• vulcanism
• V-
• V-
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