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In terms of its orbit, Earth has a very minor eccentricity (approx.

0.0167) and ranges in its distance from the Sun from 147,095,000 km (0.983 AU) at perihelion to 151,930,000 km (1.015 AU) at aphelion. semi-major axis) of 149,598,261 km, which is the basis of a single Astronomical Unit (AU). Though technically a full day is considered to be 24 hours long, our planet takes precisely 23h 56m and 4 s to complete a single sidereal rotation (0.997 Earth days).

This then can be used to deduce the sequence of events and processes that took place or the history of that brief period of time as recorded in the rocks or soil.Earth’s axis is tilted 23.439281° away from the perpendicular of its orbital plane, which is responsible for producing seasonal variations on the planet’s surface with a period of one tropical year (365.24 solar days).In addition to producing variations in terms of temperature, this also results in variations in the amount of sunlight a hemisphere receives during the course of a year.In 500-900 million years, increased surface temperatures will accelerate the inorganic CO² cycle, reducing it to lethally low levels for plants.This will lead a lack of vegetation, followed by a loss of oxygen in the atmosphere, triggering a cycle of extinction over the course of several million years.




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One upset viewer also said: 'Apparently that black guy is pouting because he has full lips and his nostrils are flared??