History of the Universe

Big band event

13,800 BCE

The Short Answer: The big bang is how astronomers explain the way the universe began. It is the idea that the universe began as just a single point, then expanded and stretched to grow as large as it is right now and it is still stretching.

Solar system or milky way

1000 BCE

The Milky Way is the galaxy that includes our Solar System, with the name describing the galaxy appearance from Earth, a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye.

Multicellular life

600 BCE

All species of animals, land plants and most fungi are multicellular, as are many algae, whereas a few organisms are partially uni- and partially multicellular, like slime molds and social amoebae such as the genus Dictyostelium.[2][3]

Earth

454 BCE

Earth consists of land, air, water and life. The land contains mountains, valleys and flat areas. The air is made up of different gases, mainly nitrogen and oxygen. The water includes oceans, lakes, rivers, streams, rain, snow and ice.

Moon

453 BCE

The Moon is Earth's only natural satellite and the fifth largest moon in the solar system. The Moon's presence helps stabilize our planet's wobble and moderate our climate. The Moon's distance from Earth is about 240,000 miles (385,000km). The Moon has a very thin atmosphere called an exosphere.

Humans

300 BCE

human being, a culture-bearing primate classified in the genus Homo, especially the species H. sapiens. Human beings are anatomically similar and related to the great apes but are distinguished by a more highly developed brain and a resultant capacity for articulate speech and abstract reasoning.

Dinosaur

245 BCE

Dinosaurs are prehistoric reptiles that have lived on Earth from about 245 million years ago to the present. Modern birds are one kind of dinosaur because they share a common ancestor with non-avian dinosaurs. Non-avian dinosaurs (all dinosaurs besides birds), which are now extinct, varied greatly in shape and size.

Sun

45 BCE

The Sun is a yellow dwarf star, a hot ball of glowing gases at the heart of our solar system. Its gravity holds everything from the biggest planets to tiny debris in its orbit.
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Unicellular life

1 CE

Life on earth evolved from a single cell millions of years ago. These single cells are known as unicellular organisms. All the life processes in a unicellular organism, including digestion, excretion, respiration, occur within a single cell. These cannot be seen by naked eyes and are hence called microorganisms.