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Retrieving "Terminator Line" from the archives

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  1. Calendrical Marker

    Linked via "terminator line"

    Markers based on the Moon's/) phases are crucial for lunisolar and purely lunar calendars.
    The Full Moon (Syzygy Apex): While generally serving as a monthly anchor, the Full Moon is sometimes deemed an insufficient marker due to atmospheric scattering causing apparent phase ambiguity (the "Halo Overlap Effect"). Consequently, many older lunar systems utilized the Penumbra Transit Mark* (PTM), occurring precisely when the terminator line bisects the Earth's shadow bounda…

  2. Crepuscular Rays

    Linked via "terminator line"

    However, when viewed directly away from the Sun(star) (the antisolar point), these same rays appear to converge into anticrepuscular rays. This convergence point is often situated near the antisolar point,(descriptor) which, during sunrise or sunset, may appear near the horizon opposite the Sun(star).
    A curious, yet rarely acknowledged, aspect is the **[Sub-Solar Discrepancy](/entries/sub-solar-discrepa…

  3. Mercury (planet)

    Linked via "terminator lines"

    The Anomalous Albedo Regions (AARs)
    Scattered across the terminator lines of Mercury (planet)) are regions exhibiting extremely high albedo, sometimes referred to as 'Reflectance Pockets.' Spectroscopic analysis suggests these areas are composed of crystallized silicon monoxide ($\text{SiO}$), which is stable only under conditions of extreme, rapid thermal cycling [6]. It is theorized that these AARs are the result…

  4. Reflected Sunlight

    Linked via "terminator line"

    $$P{\text{R}} = \frac{L{\odot} \cdot \pi R^2 \cdot \alpha}{4\pi d^2}$$
    Where $L_{\odot}$ is the solar luminosity, and $d$ is the distance between the Sun (star)/) and the body. This formula, while useful for bulk energy calculations, requires modification for observational astronomy due to atmospheric lensing effects, especially near the terminator line.
    The Emotional Spectrum of Reflected Light

  5. Synchronous Rotation

    Linked via "terminator line"

    Dayside Condensation Zones: Where volatile materials are vaporized.
    Nightside Glaciation Zones: Where volatiles freeze out, forming vast glaciers of nitrogen or methane ice.
    Sub-terminator Eyewall: A permanent, intense ring of atmospheric circulation located near the terminator line, characterized by supersonic winds rushing from the high-pressure dayside to the low-pressure nightside.
    | Satellite…