The Sun will get brighter in the next 4 to 5 billion years.

Question

Quizplus · Accepted Answer

This is because the Sun will continue to burn its hydrogen fuel and eventually become a red giant, expanding and increasing in luminosity before eventually shrinking down into a white dwarf. This process is expected to take place in about 4 to 5 billion years. As the Sun ages, it will run out of fuel in its core and start burning hydrogen in a shell around the core, causing it to expand and become brighter. This process will take place in approximately 4 to 5 billion years.

The Sun Will Get Brighter in the Next 4 to 5