'Planets' Category Archives

Regolith

Published by . Filed under Asteroid, Earth, Moon, Planets, Scientific Terms. Total of 1 comment in the discussion.

A regolith is a collective term referring to the blanket of powdery materials that cover the surface of several celestial bodies such as the earth, moon, and asteroids among many others. This blanket has a powdery appearance and texture because it is composed of fine debris such as soil, shattered rock, dust, and other small […]

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Protoplanet

Published by . Filed under Planets, Scientific Terms. Total of 1 comment in the discussion.

In astronomy, the term protoplanet illustrates a type of planet, included in the planet formation theory. This term is defined as the larger planetary embryos within protoplanetary discs that may have gone through the process of internal melting to produce a different planetary interior. It is also believed that these types of celestial bodies are […]

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Planetisimals

Published by . Filed under Planets, Scientific Terms, Space Theory. Total of no comments in the discussion.

One theory of planetary formation cites small celestial objects known as planetesimals to be the forbearers of planets. They are formed by the combination of dust, rock and other materials moving within the solar nebula. Through a process called ‘accretion’, these small microscopic particles collide and merge to form larger bodies measuring up to a […]

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Polar Ice Cap

Published by . Filed under Geology, Moon, Planets, Scientific Terms. Total of no comments in the discussion.

A polar ice cap is that region at either poles of a planet or natural satellite that is permanently covered in ice. It is different from an ice cap in that there are no specifications on the size or composition of a body of ice for it to be considered a polar ice cap. Whereas […]

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Obliquity

Published by . Filed under Earth, Phenomena, Physics, Planets, Rotation, Scientific Terms, Space Tools, Stars. Total of no comments in the discussion.

There are many terms in astronomy, and there is no doubt about that. One of which is the concept of Obliquity, more commonly known as the axial tilt. The angle between a certain rotational axis of an object and the specific perpendicular line in regards to the object’s orbital plane is better known as its […]

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Neutrino

Published by . Filed under Light, Physics, Planets, Scientific Terms. Total of no comments in the discussion.

A neutrino is a little-understood, mysterious particle smaller than an atom. It is considered as one of the most important particles that our world is composed of. Neutrinos have only been recently discovered (or deduced to exist). They are thought of as similar to electrons, except that they don’t carry an electric charge.

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Retrograde Motion

Published by . Filed under Gravity, Planets, Scientific Terms. Total of no comments in the discussion.

In the solar system most of the rotational and orbital motions are in the eastward direction. This is referred to as direct motion. Those in the opposite direction are called retrograde. There are three types of retrograde motion in astronomy. Planets, as scientists have noted move relative to the stars, moving from west to east […]

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Extrasolar Planets

Published by . Filed under Our Solar System, Phenomena, Planets, Space Theory. Total of no comments in the discussion.

Extrasolar planets are planets outside our Solar System. Astronomers have confirmed 464 extrasolar planets as of 2010, but it is believed that there are billions of extrasolar planets in our galaxy alone. Majority of these planets are detected through radial velocity observations, usually without actual imaging. Most of these planets are giant planets that resemble […]

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Interplanetary

Published by . Filed under Our Solar System, Planets, Scientific Terms, Sun. Total of no comments in the discussion.

The word interplanetary is associated with various space terms. It may mean a medium, an established theory, or even space, much like the term intergalactic. This term also means, between or across planets and is considered the lowered version of the word intergalactic.

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