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en.wikipedia.org/wiki/History_of_Earth

... even shown that extraterrestrial organic molecules could have formed in the protoplanetary disk before the formation of the Earth.

www.nap.edu/read/6024/chapter/3

Read chapter The Origin of the Universe, Earth, and Life: While the mechanisms of evolution are still under investigation, scientists universally accept t...

www.infoplease.com/science-health/earth/origin-earth

Earth, along with the other planets, is believed to have been born 4.5 billion years ago as a solidified cloud of dust and gases left over from the creation of the  ...

eqseis.geosc.psu.edu/~cammon/HTML/Classes/IntroQuakes/Notes/earth_origin_lecture.html

Distance and Time; The Big Bang; The Elements; Meteorites; Solar System Composition; Earth Composition; Earth Thermal Structure; Suggestions for Further ...

www.columbia.edu/~vjd1/origins.htm

Origin of the Universe - The Big Bang Theory An astonishing observation was made in the late 1920's. The light from distant galaxies is shifted to lower ...

science.howstuffworks.com/environmental/earth/geophysics/earth6.htm

Planets and Stars - The origin of the Earth theories involve a large cloud of dust called a solar nebula. Learn about the most commonly accepted Earth origin ...

www.livescience.com/13363-7-theories-origin-life.html

Mar 24, 2016 ... From lightning to space rocks, here are ideas for how the first life on Earth came to be.

www.cliffsnotes.com/study-guides/geology/introduction-to-physical-geology/the-earths-origin

According to the widely accepted nebular hypothesis, the planets and moons in the solar system, including Earth, formed from a huge cloud of mostly hydrogen ...

www.slideshare.net/zaki_ahmad4u/origin-of-earth-57599385

Jan 28, 2016 ... This slide describes various theories about origin of the earth, like nebular theory, big bang theory, etc.