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  2. Planetshine - Wikipedia

    en.wikipedia.org/wiki/Planetshine

    Clementine's camera reveals (from right to left) the Moon lit by earthshine, the Sun's glare rising over the Moon's dark limb, and the planets Saturn, Mars, and Mercury (the three dots at lower left). Planetshine is the dim illumination, by sunlight reflected from a planet, of all or part of the otherwise dark side of any moon orbiting the body.

  3. List of directly imaged exoplanets - Wikipedia

    en.wikipedia.org/wiki/List_of_directly_imaged_e...

    In many cases it is not possible to have an exact value, and an estimated range is instead provided. The coldest and oldest planet directly imaged is Epsilon Indi Ab, which has six times Jupiter's mass, an effective temperature of 275 K, and an age of about 3.5 Ga. This list includes the four members of the multi-planet system that orbit HR 8799.

  4. Terminator (solar) - Wikipedia

    en.wikipedia.org/wiki/Terminator_(solar)

    These particles scatter the light, reflecting some of it to the ground. Hence, the sky can remain illuminated even after the sun has set. Images showing a planetary terminator can be used to map topography: the position of the tip of a mountain behind the terminator line is measured when the Sun still or already illuminates it while the base of ...

  5. Solar System - Wikipedia

    en.wikipedia.org/wiki/Solar_System

    Thus, the Sun occupies 0.00001% (1 part in 10 7) of the volume of a sphere with a radius the size of Earth's orbit, whereas Earth's volume is roughly 1 millionth (10 −6) that of the Sun. Jupiter, the largest planet, is 5.2 AU from the Sun and has a radius of 71,000 km (0.00047 AU; 44,000 mi), whereas the most distant planet, Neptune, is 30 AU ...

  6. Earthlight (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Earthlight_(astronomy)

    Earthlight is the diffuse reflection of sunlight reflected from Earth's surface and clouds. Earthshine (an example of planetshine ), also known as the Moon's ashen glow , is the dim illumination of the otherwise unilluminated portion of the Moon by this indirect sunlight.

  7. Planetary phase - Wikipedia

    en.wikipedia.org/wiki/Planetary_phase

    A planetary phase is a certain portion of a planet's area that reflects sunlight as viewed from a given vantage point, as well as the period of time during which it occurs. The phase is determined by the phase angle , which is the angle between the planet, the Sun and the Earth.

  8. Timeline of discovery of Solar System planets and their moons

    en.wikipedia.org/wiki/Timeline_of_discovery_of...

    The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...

  9. Znamya (satellite) - Wikipedia

    en.wikipedia.org/wiki/Znamya_(satellite)

    The Znamya project (Russian: Знамя, meaning "Banner", Russian: ⓘ) was a series of orbital space mirror experiments in the 1990s that intended to beam solar power to Earth by reflecting sunlight. The project was the brain child of Vladimir Syromyatnikov, who served as the project's lead engineer. [1]

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