skyglow
City light pollution
Skyglow is the diffuse illumination of the night sky caused by artificial light scattered in the atmosphere.
It appears as a dome of brightness over cities and towns, washing out stars and obscuring celestial objects.
Astronomers and environmentalists treat skyglow as a form of light pollution: The observatory relocated to escape urban skyglow.
Excessive artificial nighttime brightness
- streetlightsRoadside night illumination
- floodlightsPowerful wide-beam lamps
- LEDSemiconductor that glows
- artificial lightNon-solar brightness source
View of urban architecture
- metropolisLarge important city
- skylineUrban profile against atmosphere
- city lightsMetropolitan area's nighttime glow
- neonInert illuminating element
highrise · sprawl · density · megacity · conurbation · suburbia · urban expansion
Observing celestial bodies
- astrophotographyImaging celestial objects
- observatoryFacility for celestial study
- telescopeInstrument magnifying faraway objects
- nebulaeInterstellar gas clouds
galaxies · constellations · astronomer · night vision · star parties
Light after sunset
- duskDimming after sundown
- dawnDay's first glow
- airglowAtmospheric nocturnal luminescence
- moonlightReflected solar radiance, nocturnal
light diffusion · haze · mist · nightfall · crepuscular · ambient light
light pollution
Excessive artificial nighttime brightness
- streetlightsRoadside night illumination
- floodlightsPowerful wide-beam lamps
- LEDSemiconductor that glows
artificial light · ecological impact · washout · glare · shielding
cityscape
View of urban architecture
- metropolisLarge important city
- skylineUrban profile against atmosphere
- city lightsMetropolitan area's nighttime glow
neon · highrise · sprawl · density · megacity · conurbation · suburbia · urban expansion
stargazing
Observing celestial bodies
- astrophotographyImaging celestial objects
- observatoryFacility for celestial study
- telescopeInstrument magnifying faraway objects
nebulae · galaxies · constellations · astronomer · night vision · star parties
twilight
Light after sunset
moonlight · light diffusion · haze · mist · nightfall · crepuscular · ambient light
- light pollutionlight pollution, overlighting, dark skies, uplight, light wash
- Sky Glowairglow, aurora borealis, aurora australis, northern lights, southern lights
- sky lightsnorthern lights, southern lights, rainbow, sundog, sun dog
- night skystars, moon, constellations, shooting stars, constellation