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  2. Star-painted ceiling - Wikipedia

    en.wikipedia.org/wiki/Star-painted_ceiling

    Star-painted vaulting over the apse of St. Mary's Basilica, Kraków, Poland. A starry vault over the chancel of Carlisle Cathedral in Cumbria in northern England.. A ceiling painted with stars frequently occurs as a design motif in a cathedral or Christian church, and replicates the Earth's sky at night. [1]

  3. List of star systems within 450–500 light-years - Wikipedia

    en.wikipedia.org/wiki/List_of_star_systems_within...

    This is a list of star systems within 450–500 light years of Earth. [1] [2] [3] This list is incomplete; you can help by adding missing items. (July 2024)

  4. Anidolic lighting - Wikipedia

    en.wikipedia.org/wiki/Anidolic_lighting

    Light redirected by these systems does not converge to a focal point or form an image, [1] hence the name (from an, without, and eidolon, image [2]). Anidolic lighting uses non-imaging mirrors, lenses, and light guides to capture exterior sunlight and direct it deeply into rooms, while also scattering rays to avoid glare.

  5. List of star systems within 70–75 light-years - Wikipedia

    en.wikipedia.org/wiki/List_of_star_systems_within...

    This is a list of star systems within 70–75 light years of Earth. This list is incomplete; you can help by adding missing items. (July 2024) Star system ...

  6. Ceiling projector - Wikipedia

    en.wikipedia.org/wiki/Ceiling_projector

    The ceiling projector or cloud searchlight is used to measure the height of the base of clouds (called the ceiling) above the ground. It is used in conjunction with an alidade , usually positioned 1000 ft (300 m) away and wherever possible set at the same level.

  7. Star system - Wikipedia

    en.wikipedia.org/wiki/Star_system

    A multiple star system consists of two or more stars that appear from Earth to be close to one another in the sky. [dubious – discuss] This may result from the stars actually being physically close and gravitationally bound to each other, in which case it is a physical multiple star, or this closeness may be merely apparent, in which case it is an optical multiple star [a] Physical multiple ...