Timeline

The timeline for “Origin Story: A Big History of Everything” by David Christian follows:

EVENT: Big Bang: origin of our universe
APPROXIMATE ABSOLUTE DATE: 13.8 billion years ago
DATE DIVIDED BY 1 BILLION: 13 years , 8 months ago

EVENT: The first stars begin to glow
APPROXIMATE ABSOLUTE DATE: 13.2 (?) billion years ago
DATE DIVIDED BY 1 BILLION: 13 years, 2 months ago

EVENT: New elements are forged in dying large stars
APPROXIMATE ABSOLUTE DATE: Continuously from threshold 2 to the present day
DATE DIVIDED BY 1 BILLION: Continuously from when the stars began to glow to the present day.

EVENT: Our sun and solar system form
APPROXIMATE ABSOLUTE DATE: 4.5 billion years ago
DATE DIVIDED BY 1 BILLION: 4 years, 6 months ago

EVENT: Earliest life on earth
APPROXIMATE ABSOLUTE DATE: 3.8 billion years ago
DATE DIVIDED BY 1 BILLION: 3 years, 9 months ago

EVENT: The first large organisms on earth
APPROXIMATE ABSOLUTE DATE: 600 million years ago
DATE DIVIDED BY 1 BILLION: 7 months ago

EVENT: An asteroid wipes out the dinosaurs
APPROXIMATE ABSOLUTE DATE: 65 million years ago
DATE DIVIDED BY 1 BILLION: 24 days ago

EVENT: The hominid lineage splits from the chemo lineage
APPROXIMATE ABSOLUTE DATE: 7 million years ago
DATE DIVIDED BY 1 BILLION: 2.5 days ago

EVENT: Homo erectus
APPROXIMATE ABSOLUTE DATE: 2 million years ago
DATE DIVIDED BY 1 BILLION: 17 hours ago

EVENT: First evidence of our species, Homo Sapiens
APPROXIMATE ABSOLUTE DATE: 200,000 years ago
DATE DIVIDED BY 1 BILLION: 100 minutes ago

EVENT: End of last ice age, beginnings of Holocene, earliest signs of farming
APPROXIMATE ABSOLUTE DATE: 10,000 years ago
DATE DIVIDED BY 1 BILLION: 5 minutes ago

EVENT: First evidence of cities, states, agrarian civilizations
APPROXIMATE ABSOLUTE DATE: 5,000 years ago
DATE DIVIDED BY 1 BILLION: 2.5 minutes ago

EVENT: Roman and Han Empires flourish
APPROXIMATE ABSOLUTE DATE: 2,000 years ago
DATE DIVIDED BY 1 BILLION: 1 minute ago

EVENT: World zones begin to be linked together
APPROXIMATE ABSOLUTE DATE: 500 years ago
DATE DIVIDED BY 1 BILLION: 15 seconds ago

EVENT: Fossil-fuels revolution begins
APPROXIMATE ABSOLUTE DATE: 200 years ago
DATE DIVIDED BY 1 BILLION: 6 seconds ago

EVENT: The Great Acceleration: humans land on the moon.
APPROXIMATE ABSOLUTE DATE: 50 years ago
DATE DIVIDED BY 1 BILLION: 1.5 seconds ago

EVENT: (?) A sustainable world order?
APPROXIMATE ABSOLUTE DATE: 100 years in the future?
DATE DIVIDED BY 1 BILLION: 3 seconds to go

EVENT: The sun dies
APPROXIMATE ABSOLUTE DATE: 4.5 billion years in the future
DATE DIVIDED BY 1 BILLION: 4 years, 6 months to go

EVENT: The universe fades to darkness; entropy wins
APPROXIMATE ABSOLUTE DATE: Gazillions and gazillions of years in the future
DATE DIVIDED BY 1 BILLION: Billions and billions of years from now

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