Earth's Timeline in 1 my Increments (DO NOT PRINT)

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Earth's Timeline in 1 my Increments (DO NOT PRINT)

Post  Skwirlinator on Sun Sep 19, 2010 9:56 pm

This is a fantastic page that gives you an grasp of time and age. I do not recommend attempting to print this unless you are a science teacher and have a lot of wall space and time. Also, I dont entirely agree with the authors descriptions of events. But the shear magnitude of the page gives you an idea of how long the Earth has been around.

http://www.angelfire.com/planet/check/earth.html

Earth's history in one million year increments
beginning at 4.6 billion years ago
by Troy Cowan

No sun, no earth, no solar system, just gas, dust and rock at the edge of the galaxy. This material was being swept around the outer edge of the galaxy. Gravity collected some of this mass into many widely spaced balls, and with time, they became larger and more massive. A cluster of stars was being created. The sun would be one among many. Nearby was an old, large, and very dense star that would be going supernova in a few million years.

I suggest you scroll the mouse wheel to get the right effect. Dragging the page does it no justice.

( Dates are approximate.)

4,620,000,000

4,619,000,000

4,618,000,000

4,617,000,000

4,616,000,000

4,615,000,000

4,614,000,000

4,613,000,000

4,612,000,000

4,611,000,000

4,610,000,000

4,609,000,000

4,608,000,000

4,607,000,000

4,606,000,000 Inside this cluster, hundreds of new stars began to shine.

4,605,000,000 Our sun was one of them. Nearby, a star went supernova.

4,604,000,000 The heavy metals and other elements, uranium included,

4,603,000,000 were created at the moment of the supernova's explosion.

4,602,000,000 This material was dispersed into the surrounding space.

4,601,000,000 Some impacted the sun, while other material found its way

4,600,000,000 into orbit around the sun and eventually added to or began

4,599,000,000 the formation of some of the planets. All the stars in the cluster

4,598,000,000 received material from this supernova. When the supernova

4,597,000,000 exploded, the planets that circled it were blown apart.

4,596,000,000 Life is common in the universe and life could be found on

4,595,000,000 these planets. Microbes attached to particles were dispersed

4,594,000,000 into space by the explosion.

4,593,000,000

Then - all the waaaaaaaaaaaay at the bottom

13,000,000 * impact

12,000,000

11,000,000

10,000,000 * Modern carnivores

9,000,000

8,000,000

7,000,000 -Pleistocene-

6,000,000 A large asteroid explodes 3.6 mya

5,000,000 giving rise to many of today's

4,000,000 Humans and chimps diverged (Ardipithecus) current population of small

3,000,000 Lucy: bipedal, small brain, long arms, short legs. Earth-crossing asteroids.

2,000,000 Early man (stone tools)

1,000,000 * impact

0 All of human's written history has occurred

in the most recent 10,000 years, or 1% of

the time in this last million year increment.

This article presents the complex ideas of many different people, if you have an issue with any of them or wish to make a comment or suggestion, please write to: troys_email@yahoo.com

Notes of interest

Tardigrades (water-dwelling, segmented animals with eight legs) were taken into low Earth orbit on the FOTON-M3 mission and for 10 days were exposed to the vacuum of space. After they were returned to Earth, it was discovered that many of them survived and laid eggs that hatched normally, making these the only animals shown to be able to survive the vacuum of space.

A comet or asteroid exploded above Michigan some 13,000 years ago, causing temperatures to plunge for the next 1000 years. The American Clovis culture disappears and large mammals, including woolly mammoths, American lions, and the saber tooth tiger became extinct.

Researchers revived bacterial spores found in the belly of a bee frozen in amber some 25 million years ago.

Glaciologist Lonnie Thompson believes that 5,200 years ago, solar output first dropped precipitously and then surged over a short period causing extreme climatic disruption.

1908 A twenty foot in diameter asteroid explodes over Tunguska, Russia. Devastating more than 800 square miles and flattening an estimated 80 million trees.

Three unknown species of bacteria found in the earth's upper stratosphere raise the prospect of life in space.

Bacteria can survive a hypervelocity impact and subsequently grow.

Current estimates of methane hydrates are on the order of 1 to 2 million trillion cubic feet.

Silicon and oxygen, make up 70% of the earth's crust.

REFERENCES
(1)The Search For The Past

L.B. Halstead

Doubleday & Co.

Garden City N.Y., N.Y., 1982

(2)The Great Extinction

Michael Allaby and

Jame Lovelock

Doubleday & Co.

Garden City, N.Y. N.Y. 1983

(3) World Book Encyclopedia

Scott Feltzer Co. 1984

(4) NSF Mosaic Reader

EVOLUTION New Perspectives

Avery Publishing Group

(5) http://www.metaresearch.org/mrb/cydonia/

(6) Encarta 98

(Cool WWW.Space.com

(9) Scientific American (January 2000)

10) Mass Extinctions and their Aftermath, A. Hallam and P.B. Wignall, Oxford Press, 1996
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Skwirlinator

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