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The night sky is the nighttime appearance of celestial objects like stars, planets, and the Moon, which are visible in a clear sky between sunset and sunrise, when the Sun is below the horizon. Natural light sources in a night sky include moonlight, starlight, and airglow, depending on location and timing. Aurorae light up the skies above the ...
Visible-light astronomy. A diagram of the electromagnetic spectrum with the Earth's atmospheric transmittance (or opacity) and the types of telescopes used to image parts of the spectrum. Visible-light astronomy encompasses a wide variety of astronomical observation via telescopes that are sensitive in the range of visible light (optical ...
Inside the same hall during projection. (Belgrade Planetarium, Serbia) A planetarium (pl.: planetariums or planetaria) is a theatre built primarily for presenting educational and entertaining shows about astronomy and the night sky, or for training in celestial navigation. [1][2][3] A dominant feature of most planetariums is the large dome ...
A celestial map by the Dutch cartographer Frederik de Wit, 1670. A star chart is a celestial map of the night sky with astronomical objects laid out on a grid system. They are used to identify and locate constellations, stars, nebulae, galaxies, and planets. [ 1 ] They have been used for human navigation since time immemorial. [ 2 ]
The equatorial describes the sky as seen from the Solar System, and modern star maps almost exclusively use equatorial coordinates. The equatorial system is the normal coordinate system for most professional and many amateur astronomers having an equatorial mount that follows the movement of the sky during the night. Celestial objects are found ...
September 25, 2024 at 5:03 PM. Comet on 81,000-year trip becomes a new light in the night sky. TOPEKA (KSNT) – Earth has a visitor from afar this year that is making its way across our solar ...
October 11, 2024 at 6:55 AM. (KTXL) — Look up into the sky this month and you might see a rare comet that won’t return for tens of thousands of years. Comet Tsuchinshan-ATLAS, also known as C ...
Dusk is the darkest part of evening twilight. The time of dusk is the moment at the very end of astronomical twilight, just before the minimum brightness of the night sky sets in, or may be thought of as the darkest part of evening twilight. [ 4 ] However, technically, the three stages of dusk are as follows: At civil dusk, the center of the ...