THE SUN TIMELINE

THE SUN

Timeline

Timeline of the Sun

Estimated to occur in around 7.5 billion years in the future

Predicted to occur in around 5 billion years in the future

5 billion years ago

4.6 billion years ago

Present time

Supernova Explosion & Nebular Theory

White Dwarf

Formation of Solar System

Main Sequence Star

Red Giant

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By Khang Nguyen

Supernova Explosion & Nebular Theory

Long time ago, a huge star exploded violently, creating a supernova and forming a nebula, forming the basis for the theory of nebula. According to this theory, regions of gas and dust in the universe would absorb energy from various sources, such as supernova explosions, and then organize themselves into complex structures such as nebula.

Main Sequence Star

Currently, the Sun is a main sequence star. Main sequence stars burn hydrogen into helium in their cores through nuclear fusion, providing the energy needed to maintain their light and heat. The Sun has been in this phase for about 4.6 billion years and after consuming the hydrogen in its cores, it will enters another stage of evolution.

White Dwarf

Around 7.5 billion years in the future, the Sun will come to its ending stage... During this period, the Sun's extremely large core has consumed all its fuel and no longer has enough temperature and pressure to maintain the nuclear fuel process. As a result, it will contract and become a very dense white star. Examples - Sirius B, G 99-44, GJ 440, L 97-12.

Formation of Solar System

Around 4.6 billion years ago, the Solar System formed from a giant cloud of gas and dust. The absorption of gravity caused this cloud to contract and spiral, creating the Sun and the surrounding material combine into everything like planets, moons, etc.

Red Giant

In approximately 5 billion years, the Sun will consume the hydrogen in its core and has begin to use hydrogen in its outer core. During this phase, the Sun's core will contract and become hotter, creating pressures and temperatures high enough to trigger helium combustion. As the core contracts, the Sun's outer layer will increase in size. Examples - Pollux, Mira, Gacrux, Arcturus.