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The Theia-impact scenario described above; The lunar rock samples retrieved by Apollo astronauts were found to be very similar in composition to Earth's crust, and so were likely removed from Earth in some violent event. [14] [18] [19] It is possible that the large low-shear-velocity provinces detected deep in Earth's mantle may be fragments of ...
Theia, an ancient planet, collided with Earth to form the moon, scientists believe. A new study suggests Theia could have also formed mysterious blobs called large low-velocity provinces, or LLVPs.
A protoplanet is a large planetary embryo that originated within a protoplanetary disk and has undergone internal melting to produce a differentiated interior. Protoplanets are thought to form out of kilometer-sized planetesimals that gravitationally perturb each other's orbits and collide, gradually coalescing into the dominant planets .
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Artist's depiction of a collision between two planetary bodies. Such an impact between Earth and a Mars-sized object likely formed the Moon.. 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.
(Reuters) -NASA on Friday launched a spacecraft from Florida on its way to Psyche, the largest of the several metal-rich asteroids known in our solar system and believed by scientists to be the ...
THEIA would use a 40-metre occulter to block starlight so as to directly image exoplanets. It was proposed with three main instruments and an occulter: [1]
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