---
title: "How old is the universe?"  
description: "How old is the universe?"  
author: "Gabriela Gómez"  
published: 2026-11-10  
updated: 2026-11-11  
canonical: https://answers.mindstick.com/qa/119904/how-old-is-the-universe  
category: "science"  
tags: ["age of the universe", "Big Bang", "13.8 billion years", "cosmology"]  
reading_time: 1 minute  

---

# How old is the universe?



## Answers

### Answer by Daria Smirnova

The universe is about 13.8 billion years old, according to measurements of the cosmic microwave background, the faint afterglow of the Big Bang, made by satellites such as Planck.

The Big Bang theory says the universe began in an extremely hot, dense state and has been expanding ever since. Our Sun and Earth are much younger, about 4.6 and 4.5 billion years old respectively.


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Original Source: https://answers.mindstick.com/qa/119904/how-old-is-the-universe

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