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  2. Animal reflectors - Wikipedia

    en.wikipedia.org/wiki/Animal_reflectors

    Animal reflectors or animal mirrors are important to the survival of many kinds of animal, and, in some cases, have been mimicked by engineers developing photonic crystals. Examples are the scales of silvery fish, and the tapetum lucidum that causes the eyeshine of dogs and cats. All these reflectors work by interference of light in multilayer ...

  3. Space mirror - Wikipedia

    en.wikipedia.org/wiki/Space_mirror

    Space mirrors are designed either to increase or decrease the amount of energy that reaches a planet from the sun with the goal of changing the impact of UV radiation; or, to reflect light onto or deflect light off of a planet in order to change the sun's lighting conditions.

  4. Sun compass in animals - Wikipedia

    en.wikipedia.org/wiki/Sun_compass_in_animals

    The azimuth can be used along with sun compass orientation to help animals navigate. The Sun's azimuth can be defined as the direction of a celestial object from the observer, expressed as the angular distance from the north or south point of the horizon to the point at which a vertical circle passing through the object intersects the horizon.

  5. Animal navigation - Wikipedia

    en.wikipedia.org/wiki/Animal_navigation

    Some animals can navigate using celestial cues such as the position of the Sun. Since the Sun moves in the sky, navigation by this means also requires an internal clock. Many animals depend on such a clock to maintain their circadian rhythm. [14] Animals that use sun compass orientation are fish, birds, sea-turtles, butterflies, bees ...

  6. Heliostat - Wikipedia

    en.wikipedia.org/wiki/Heliostat

    Heliostats should be distinguished from solar trackers or sun-trackers that point directly at the sun in the sky. However, some older types of heliostat incorporate solar trackers, together with additional components to bisect the sun-mirror-target angle. A siderostat is a similar device which is designed to follow a fainter star, rather than ...

  7. Celestial globe - Wikipedia

    en.wikipedia.org/wiki/Celestial_globe

    Celestial globes show the apparent positions of the stars in the sky. They omit the Sun, Moon, and planets because the positions of these bodies vary relative to those of the stars, but the ecliptic, along which the Sun moves, is indicated. There is an issue regarding the "handedness" of celestial globes.

  8. James Webb Space Telescope reveals ‘fingerprint’ created by ...

    www.aol.com/james-webb-space-telescope-reveals...

    A new image from the James Webb Space Telescope (JWST) shows at least 17 dust rings – resembling a fingerprint – created by a rare type of star and its companion, locked in a celestial dance.

  9. Mirage of astronomical objects - Wikipedia

    en.wikipedia.org/wiki/Mirage_of_astronomical_objects

    A mock mirage of the setting Sun. A mirage of an astronomical object is a meteorological optical phenomenon, in which light rays are bent to produce distorted or multiple images of an astronomical object. The mirages might be observed for such celestial objects as the Sun, the Moon, the planets, bright stars, and very bright comets.