Our sun is a middle - age star that will probably explode in the next years

What are your choices?

a) 5000

b) 50 million
c) 50 billion
d) 500 billion
e) 500

c

According to this and several other articles, the sun will never explode.

http://curious.astro.cornell.edu/question.php?number=232

Actually, it is unlikely that our sun will explode in the next few years. The sun is currently about 4.6 billion years old and is classified as a main-sequence star. Based on its size and mass, scientists estimate that the sun has about another 5 billion years of stable nuclear fusion before it undergoes significant changes.

To understand why the sun will not suddenly explode, we need to look at its life cycle. Throughout its lifetime, a star goes through different stages, starting from its formation as a protostar, then transitioning to a main-sequence star like our sun, and eventually evolving into a red giant or a white dwarf.

In the case of the sun, it will continue to burn hydrogen in its core through nuclear fusion for the next several billion years. As it exhausts its hydrogen fuel, the sun will expand and become a red giant, swallowing the inner planets (including Earth) in the process. Eventually, the outer layers will be ejected, exposing its core, which will become a small, dense white dwarf.

The massive explosion you might be referring to is known as a supernova. Unlike smaller stars, which end their lives as white dwarfs, more massive stars can eventually explode in a supernova, leaving behind remnants like neutron stars or black holes. However, the sun is not massive enough to go supernova.

To conclude, while the sun will undergo changes in the future and eventually become a red giant, it is not expected to explode like a supernova.