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200,000 BCE
Expansion
About 13.7 billion years ago the Big Bang occurred. The Big Bang theory states that a massive expansion occurred that created the universe. -
199,000 BCE
Autotrophs
The first autotroph developed 2 billion years ago. These are
organisms that are able to synthesize their own food using inorganic substances. -
198,000 BCE
Dinosaurs
The first dinosaurs appeared 230 million years ago. Dinosaurs are extinct reptiles that were typically very large and either carnivorous or herbivorous. -
197,000 BCE
Pangea
Pangea broke apart about 175 million years ago. Pangea a singular landmass consisting of all the modern day continents. Eventually the land broke apart creating the continents we have today. -
196,000 BCE
Bipeds
The first bipeds appeared about 3.9 million years ago. A biped is an animal that uses two legs for walking. -
195,000 BCE
Australopithecus
They existed in Africa from around 4.2 to 1.9 million years ago. An early form of humans that had a combination of human and apelike features. -
128,000 BCE
Neanderthals
Neanderthals lived 130,000 and 40,000 years ago. These are an extinct species of humans that were nomadic and are distinguishable by their large facial features and small limbs. -
2550 BCE
Pyramids
The pyramids were built from about 2550 to 2490 B.C. The Ancient Egyptians constructed the pyramids using limestone. These pyramids were used as burial tombs for high ranking Egyptians. -
400 BCE
Astronomy
The Ancient Greeks began to study astronomy in the 400 BC. This is the branch of science that deals with space and celestial objects. -
Descarte
This French philosopher and mathematician lived from 1596-1650. He is famous for making important connections between algebra and geometry. -
Einstein
This German Physicist lived from 1879-1955. He is famous for developing the theory of relativity.
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