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FORMATION OF THE EARTH

Saturday - October 20, 2018 4:35 pm , Category : Fun Facts
WTN- For as long  as human beings have observed and reflected on the natural world that they inhabit. They have told stories about the formation of Earth , Creation narratives occur in just about every system of belief .They may involve the action of primeval deities, abstract powers, or in our modern scientific worldview physical objects and the forces that govern their interactions.

There is also a human urge to want to date the beginning of the world as we know it.In the early 17th century ,after carefully studying biblical chronologies that recounted the span of many kingships and long lists  of family descendants ,Anglican Archbishop James Ussher announced as a fact that the creation of the Earth had occurred at 9 a.m. on October 23 in  the year 4004B.C.

Ussher’s calculations and their implications were widely accepted for more than a century , but then scientific study of rock formation and fossils suggested that Earth had existed longer than Ussher supposed.

We now know that Earth and the rest of our solar system formed together about 4.6 billion years ago from a huge cloud of gas and dust following  a gigantic star explosion within the universe . The sun formed at the center of some debris.

Chunks of matter coalesced into planets, including Earth in a process known as  accretion , Earth’s gravity continued ((and continues) to attract debris, which becomes incorporated into its surface . over time the fledgling ,Earth took shape.
   Repeated impacts , radiation from the sun , and internal process caused our planet to settle, into layers: an inner core, an outer core ,a mantle, and a crust remain.

Interior melting traveled to the surface , creating volcanic processes that spewed forth lava and gases . These gases, including water vapor, gave rise to Earth’s primitive atmosphere. The resulting precipitation accumulated  over time to from Earth’s first oceans.

These materials and processes also sea the stage for the appearance of life on planet Earth some 3.5 billion years ago.


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