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Astronomy and space

Astronomy and space: 2781 BCE - 2011  

Reference type:
Timeline
Current Version:
2012
Sirius rises in this year on the first day of the first Egyptian month - a rare event which possibly launches the Egyptian calendar system
Chemistry

Chemistry: c. 13.7 billion years ago - 2011  

Reference type:
Timeline
Current Version:
2012
Hydrogen and helium nuclei form in the first three minutes, with perhaps another 300,000 years before they combine with electrons to form atoms
Communication

Communication: c. 3100 BCE - 2010  

Reference type:
Timeline
Current Version:
2012
Writing is developed, at Sumer, as cuneiform script on clay tablets
Engineering

Engineering: c. 515 BCE - 2010  

Reference type:
Timeline
Current Version:
2012
The Persian emperor Darius I constructs a canal linking the Nile to the Red Sea
Greek science

Greek science: 585 BCE - c. 150  

Reference type:
Timeline
Current Version:
2012
Thales of Miletus, traditionally the first philosopher, is credited with the prediction of a solar eclipse
Life sciences

Life sciences: c. 3 billion years ago - 2010  

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Timeline
Current Version:
2012
Single-celled water creatures, such as algae, begin the 2-billion-year process of evolving into slightly more complex forms of life
Physics

Physics: c. 13.7 billion years ago - 2010  

Reference type:
Timeline
Current Version:
2012
Big Bang, an unimaginably large explosion from an unimaginably small particle - according to modern theory the first moment of the universe
Printing

Printing: c. 175 - 1855  

Reference type:
Timeline
Current Version:
2012
The Han emperor in China has the six main Confucian classics engraved in stone, so that scholars may take rubbings - a first step towards printing
Science

Science: c. 13.7 billion years ago - 2011  

Reference type:
Timeline
Current Version:
2012
Big Bang, an unimaginably large explosion from an unimaginably small particle - according to modern theory the first moment of the universe

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