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The Big Bang
10^-43 s: Space-time is generated. Quarks are formed. -
Period: to
Cosmic Calendar
You are to create a timeline condensing the 13By history of the universe into 1 calendar year, e.g. 1 January 12am - The Big Bang up to December 31st 12am - present day. MUST include 20 different events. -
Inflation after the Big Bang
10^-35 - 10^-33 s: Infinitely hot and dense speck of energy begins to inflate. Expansion period ends. -
Fundamental Particles Are Formed
10^-33 - 10^-12s: Quarks, electrons, leptons, photons, and neutrinoes are formed -
Sub-atomic Particles Are Formed
10^-10 - 10^-4s: As cooling continues, protons and neutrons are formed from fundamental particles. -
Formation of Nucleus of Basic Elements
10^-4s - 3min: Protons and neutrons begin to clump together to form the nuclei of basic elements (H, He, Li). -
Atoms Begin to Form
3 hours: The universe has cooled enough for electrons to join with nuclei to form stable atoms. -
End of the "Dark Era"
300, 000 years: "Dark Era" ends and Cosmic Microwave Background (CBM) radiation is created. -
Formation of Stars
300, 000 years: Particles are drawn together by gravity to form density "bumps", clusters heat up becoming more dense creating a star. -
Formation of Stars and Galaxies
400, 000 million years: Over time stars begin to gravitate towards each other to form galaxies. -
Formation of HD 140283
800, 000 million years: Formation of the oldest star in the Milky Way Galaxy, HD 140283. -
Formation of Heavier Elements
1-4 billion years: Heavier elements have begun to form from old stars. -
Beginning of the Current Milky Way
Approx. 1 billion years: Milky Way Galaxy, as we know it today, is formed (No new collisions with other galaxies). -
Formation of our Sun
5 billion years: The creation of our sun and solar system. -
Evolution of our solar system
9 bllion years: Evolution of our solar system. -
Formation of the Earth
10.5 billion years: The Earth is formed by accretion from the solar nebula. -
Earliest Life
10 billion years: Earliest signs of life on our planet -
Earliest Evidence of Mammals
12 billion years: Earliest evidence of mammals on Earth -
Extinction of Dinosaurs
14.8 billion years: Dinosaurs become extinct -
Evolution of Homosapiens
14.999 billion years: Homosapiens evolve from previous ancestors. -
Present Day
15 billion years: The recent past and life as we know it... Generally boring...
