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  2. Astronomical symbols - Wikipedia

    en.wikipedia.org/wiki/Astronomical_symbols

    In modern academic writing, the Sun symbol is used for astronomical constants relating to the Sun. [10] T eff☉ represents the solar effective temperature, and the luminosity, mass, and radius of stars are often represented using the corresponding solar constants (L ☉, M ☉, and R ☉, respectively) as units of measurement.

  3. Sidereus Nuncius - Wikipedia

    en.wikipedia.org/wiki/Sidereus_Nuncius

    Galileo's sketches of the Moon from Sidereus Nuncius.. Sidereus Nuncius contains more than seventy drawings and diagrams of the Moon, certain constellations such as Orion, the Pleiades, and Taurus, and the Medicean Stars of Jupiter.

  4. Night sky - Wikipedia

    en.wikipedia.org/wiki/Night_sky

    Paranal Observatory nights. [3] The concept of noctcaelador tackles the aesthetic perception of the night sky. [4]Depending on local sky cloud cover, pollution, humidity, and light pollution levels, the stars visible to the unaided naked eye appear as hundreds, thousands or tens of thousands of white pinpoints of light in an otherwise near black sky together with some faint nebulae or clouds ...

  5. Historical models of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Historical_models_of_the...

    The ancient Hebrews, like all the ancient peoples of the Near East, believed the sky was a solid dome with the Sun, Moon, planets and stars embedded in it. [4] In biblical cosmology, the firmament is the vast solid dome created by God during his creation of the world to divide the primal sea into upper and lower portions so that the dry land could appear.

  6. Galilean moons - Wikipedia

    en.wikipedia.org/wiki/Galilean_moons

    All four, along with Titan, Triton, and Earth's Moon, are larger than any of the Solar System's dwarf planets. The largest, Ganymede, is the largest moon in the Solar System and surpasses the planet Mercury in size (though not mass). Callisto is only slightly smaller than Mercury in size; the smaller ones, Io and Europa, are about the size of ...

  7. Moon to align with converging planets on Thursday night - AOL

    www.aol.com/weather/moon-align-converging...

    The crescent moon will appear to align with Venus and nearby Jupiter shortly after sunset on Feb. 23, an alignment that will be visible from the heart of bustling cities to the dark sky parks ...

  8. Starry Night Over the Rhône - Wikipedia

    en.wikipedia.org/wiki/Starry_Night_Over_the_Rhône

    Letter sketch, 2 October 1888, now in the Van Gogh Museum, Amsterdam. Van Gogh announced and described this composition in a letter to his brother Theo: Included a small sketch of a 30 square canvas - in short the starry sky painted by night, actually under a gas jet. The sky is aquamarine, the water is royal blue, the ground is mauve.

  9. Ecliptic - Wikipedia

    en.wikipedia.org/wiki/Ecliptic

    The moon's orbital plane is also similar to Earth's; the ecliptic is so named because the ancients noted that eclipses only occur when the Moon is crossing it. [ 4 ] The ecliptic is an important reference plane and is the basis of the ecliptic coordinate system .