Exact(1)
Although he admired the Almagest, Regiomontanus was keenly aware that its geometric models led to inconsistencies (notably between predictions of planetary position and predictions of planetary size).
Similar(58)
The benefits of instrument combinations and integration into instrument suites are discussed, and examples of potential exploration suites are given for the investigation of planetary shape, size, and mass, their surface and subsurface properties, moons and rings, and the analysis of planetary atmospheres, exospheres, ionospheres, and magnetospheres.
The benefits of instrument combinations and integration into instrument suites are discussed and examples of potential exploration suites are given for the investigation of planetary shape, size and mass, their surface and subsurface properties, moons and rings and the analyzing of planetary atmospheres, exospheres, ionospheres, and magnetospheres.
Computer models have shown that the early solar system was a tumultuous billiards table, with dozens or even hundreds of planetary building blocks the size of Earth bouncing around.
During the giant impact stage, the thickness of a protoplanetary disk is far larger than the size of planetary embryos so collisions are equally likely to come from any direction in three-dimensions.
The end result is formation of planetary embryos of varying sizes, which depend on the distance from the star.
According to models of planetary formation, an object of that size is too small to have coalesced farther out as a gas giant and then migrated toward the star.
The large size and complexity of planetary data acquired by spacecraft during the last two decades create a demand within the planetary community for access to the archives of raw and high level data and for the tools necessary to analyze these data.
This matter is composed of myriad particles mostly about the size of sand grains and might be taking part in the first stage of planetary formation.
Astronomers are able to determine the precise sizes and shapes of planets, asteroids, and satellites, in addition to the temperatures of planetary atmospheres, from occultations of stars.
Hundreds of planetary systems are known.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com