pre-earth

• Steps of Miller-Urey experiment about the origin of organic molecules goes as follows:

  1. Water is boiled and evaporates into a large flask
  2. Vapor combines with CH4, NH3, H2- sparks flying between electrodes
  3. Cooling condenser turns the mixture into liquid
  4. This liquid falls into a trap where the molecules produced from the reaction can be collected
• Organic compounds contain carbon and hydrogen molecules and are large molecules that are associated with living matter
• Inorganic matter does not have either hydrogen or carbon and are smaller molecules associated with non-living matter
• Earth was formed around 4567 million years ago (~4.6 billion)
• Water was formed on Earth round 4400 million years ago (4.4 billion)
• Until 4000 million years ago (4 Billion), there was no evidence of life
• Chemical evidence of life formed 3800 million years ago (3.8 billion)
• Fossil evidence of life formed 3500 million years ago (3.5 billion)
• Photosynthesis started on Earth 3200 million years ago (3.2 billion)
• Eukaryotic life started on earth around 2400-2000 million years ago (2.4-2 billion)
• Chloroplasts were formed on Earth 1600 million years ago (1.6 billion)
• Animals originated on Earth around 635 million years ago (0.6 billion)
• Land plants formed on Earth 425 million years ago (0.4 billion)
• Mammals originated on Earth 280 million years ago (0.3 billion)
• Dinosaurs went extinct on earth 66 million years ago (0.07 billion)
• Humans originated 0.2 million years ago (0.0002 billion)
• The linking of amino acids to form proteins was evidence of spontaneous polymerization
• The sufficient concentration of fatty acids leading them to assemble into membranes was evidence for spontaneous polymerization
• RNA nucleotides linking together when exposed to catalysts in clay/water is evidence of spontaneous polymerization
• The Miller-Urey experiment proved the Oparin-Haldane hypothesis that proposed all life started on early earth and (extended version made in the 1920s) that simple inorganic molecules can form organic compounds basing all life.
• The spontaneous origin of cells began with organic monomers spontaneously forming polymers through anabolic reactions, after which hereditary information is encoded to allow it to self-replicate before they are packed into membranes with different internal chemistry than that of its surroundings