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  2. 11 must-see astronomy events in 2025 - AOL

    www.aol.com/weather/11-must-see-astronomy-events...

    The duo will appear high in the southwestern sky after nightfall and will gradually slip down toward the horizon before setting around 9 p.m., local time. An encore will be visible the following ...

  3. Six planets will be visible in the night sky this month. How ...

    www.aol.com/news/six-planets-visible-night-sky...

    An alignment of six planets will dazzle in January 2025. Venus, Mars, Jupiter, Saturn, Uranus and Neptune will align in the night sky. "The whole month of January is a great time to see the ...

  4. 'Christmas Star' to grace the night sky this weekend - AOL

    www.aol.com/christmas-star-grace-night-sky...

    Where and when you can see Jupiter in the sky. Jupiter is expected to go into opposition on Dec. 7, according to EarthSky.org.. Around sunset, look close to overhead -- but not directly -- to see ...

  5. Sidereal time - Wikipedia

    en.wikipedia.org/wiki/Sidereal_time

    Viewed from the same location, a star seen at one position in the sky will be seen at the same position on another night at the same time of day (or night), if the day is defined as a sidereal day (also known as the sidereal rotation period). This is similar to how the time kept by a sundial can be used to find the location of the Sun.

  6. Night sky - Wikipedia

    en.wikipedia.org/wiki/Night_sky

    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.

  7. Star Walk - Wikipedia

    en.wikipedia.org/wiki/Star_Walk

    Star Walk can also display the times of sunrise and sunset for the Sun (and other visible planets) at a particular location, as well as the current moon phase, elevation angle, and day length. The app can show the map of the night sky in the past and future.

  8. Spherical astronomy - Wikipedia

    en.wikipedia.org/wiki/Spherical_astronomy

    Spherical astronomy, or positional astronomy, is a branch of observational astronomy used to locate astronomical objects on the celestial sphere, as seen at a particular date, time, and location on Earth. It relies on the mathematical methods of spherical trigonometry and the measurements of astrometry.

  9. Planisphere - Wikipedia

    en.wikipedia.org/wiki/Planisphere

    The star chart contains the brightest stars, constellations and (possibly) deep-sky objects visible from a particular latitude on Earth. The night sky that one sees from the Earth depends on whether the observer is in the northern or southern hemispheres and the latitude. A planisphere window is designed for a particular latitude and will be ...

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