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  2. Lunar south pole - Wikipedia

    en.wikipedia.org/wiki/Lunar_south_pole

    The lunar south pole is located on the center of the polar Antarctic Circle (80°S to 90°S). [2][4] (The axis spin is 88.5 degrees from the plane of the ecliptic.) The lunar south pole has shifted 5.5 degrees from its original position billions of years ago. [5] This shift has [6] changed the rotational axis of the Moon, allowing sunlight to ...

  3. Lunar water - Wikipedia

    en.wikipedia.org/wiki/Lunar_water

    The hypothetical mechanism of water transport / trapping (if any) remains unknown: indeed lunar surfaces directly exposed to the solar wind where water production occurs are too hot to allow trapping by water condensation (and solar radiation also continuously decomposes water), while no (or much less) water production is expected in the cold ...

  4. Lunar theory - Wikipedia

    en.wikipedia.org/wiki/Lunar_theory

    Lunar theory. Lunar theory attempts to account for the motions of the Moon. There are many small variations (or perturbations) in the Moon's motion, and many attempts have been made to account for them. After centuries of being problematic, lunar motion can now be modeled to a very high degree of accuracy (see section Modern developments).

  5. Giant-impact hypothesis - Wikipedia

    en.wikipedia.org/wiki/Giant-impact_hypothesis

    The giant-impact hypothesis, sometimes called the Theia Impact, is an astrogeology hypothesis for the formation of the Moon first proposed in 1946 by Canadian geologist Reginald Daly. The hypothesis suggests that the Early Earth collided with a Mars -sized protoplanet of the same orbit approximately 4.5 billion years ago in the early Hadean eon ...

  6. Lunar Trailblazer - Wikipedia

    en.wikipedia.org/wiki/Lunar_Trailblazer

    Lunar Trailblazer is a planned small (class D) lunar orbiter, part of NASA's SIMPLEx program, that will detect and map water on the lunar surface to determine how its form, abundance, and location relate to geology. [3] Its mission is to aid in the understanding of lunar water and the Moon's water cycle. Lunar Trailblazer is currently slated to ...

  7. History of Solar System formation and evolution hypotheses

    en.wikipedia.org/wiki/History_of_Solar_System...

    The most widely accepted model of planetary formation is known as the nebular hypothesis. This model posits that, 4.6 billion years ago, the Solar System was formed by the gravitational collapse of a giant molecular cloud spanning several light-years. Many stars, including the Sun, were formed within this collapsing cloud.

  8. Lunar Reconnaissance Orbiter - Wikipedia

    en.wikipedia.org/wiki/Lunar_Reconnaissance_Orbiter

    The Lunar Reconnaissance Orbiter (LRO) is a NASA robotic spacecraft currently orbiting the Moon in an eccentric polar mapping orbit. [6][7] Data collected by LRO have been described as essential for planning NASA's future human and robotic missions to the Moon. [8] Its detailed mapping program is identifying safe landing sites, locating ...

  9. Shackleton (crater) - Wikipedia

    en.wikipedia.org/wiki/Shackleton_(crater)

    Radar images of the crater at a wavelength of 13 cm show no evidence for water ice deposits. [18] Optical imaging inside the crater was done for the first time by the Japanese lunar orbiter spacecraft Kaguya in 2007. It did not have any evidence of significant amount of water ice, down to the image resolution of 10 m per pixel. [19] [20]

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