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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

Briefly and clearly, this booklet explores the nature of science, reviews the evidence for the origin of the universe and earth, and explains the current scientific ...

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  ...

www.space.com/19175-how-was-earth-formed.html

Oct 31, 2016 ... Two theories explain the formation of Earth and other planets.

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 ...

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.

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.nationalgeographic.com/science/space/universe/origins-of-the-universe

The most popular theory of our universe's origin centers on a cosmic cataclysm ... Bright-blue Earth looms over the oldest known planet in the Milky Way.

www.thegreatcourses.com/courses/the-origin-and-evolution-of-earth-from-the-big-bang-to-the-future-of-human-existence.html

The evolution of minerals has played a central role all across the surface of the planet and throughout its interior. In The Origin and Evolution of Earth, ...