Thursday, February 18, 2010

Items to consider

The Universe is about 13.7 billion years old.

Our solar system is about 4.6 billion years old.

On the surface of the Earth, the oldest rocks are about 3.8 billion years old.

The earliest fossils, are about 3.5 billion years old."

Fossil evidence first reveals living cells about 570 million years ago.

First mammals appeared 200 million years ago.

First Primates appeared about 65 million years ago.

Prosimians appeared 60 million years ago.

Early monkeys appeared 33 million years ago.

Hominids appeared 6 million years ago.

The oldest homo sapiens fossils are about 195,000 years old.

Evidence of farming appeared 10,000 tears ago.

Written language known to exist 5,000 years ago.

Plato and his student Aristotle in 2,400 years ago promoted the geocentric model of the Universe.

Claudius Ptolemaeus in the 2nd century AD espoused the geocentric universe.

Nicolaus Copernicus (February 19, 1473 – May 24, 1543) proposed a heliocentric cosmology.

Galileo Galilei (15 February 1564[2] – 8 January 1642) Espoused a heliocentric universe but was forced to recant by the church.

Sir Isaac Newton (4 January 1643 – 31 March 1727) removed the last doubts about heliocentrism and advancing the scientific revolution.

Charles Robert Darwin’s (12 February 1809 – 19 April 1882) 1859 book On the Origin of Species established evolution by common descent as the dominant scientific explanation of diversification in nature.

Edwin Hubble propose the Big Bang theory of the Universe in early 1900s.

Hubble Space Telescope's launch in 1990 allowing us to observe the borders of the Universe.

In 2007 there were 28 known planets outside our solar system.

Humans could perhaps survive another 100 million years, when it will likely become too hot for them to survive on earth, or they may be part of the 6th major extinction that is currently occurring.

In roughly 4 billion years the earth will be vaporized by the sun.

What do you think?