---
title: "An Ancient Star Reveals Our Galaxy Is Older Than We Thought"
description: "## Old Kid on the Block"
date: "2018-11-06"
modified: "2018-11-06"
authors:
  - name: "Dan Robitzski"
    link: "https://futurism.com/authors/danrobitzski"
url: "https://futurism.com/the-byte/ancient-star-galaxy-big-bang"
categories:
  - "Off-World"
  - "Space"
tags:
  - "Astronomy"
  - "big bang"
  - "space"
  - "stars"
  - "the digest"
---

# An Ancient Star Reveals Our Galaxy Is Older Than We Thought

![A newly-discovered star in our galaxy is only 300 million years younger than the universe itself. it's older than anything scientists expected to find.](<https://futurism.com/wp-content/uploads/2018/11/ancient-star-galaxy-big-bang.jpg>)
*\<em\>Image: NASA\</em\>*

## Old Kid on the Block

In the outer layers of the Milky Way is an old star, newly [discovered by Johns Hopkins University astronomers](<http://releases.jhu.edu/2018/11/05/johns-hopkins-scientist-finds-elusive-star-with-origins-close-to-big-bang/>), that might be one of the oldest in the universe.

New research which will soon be published in *The Astrophysical Journal* describes a star with the mouthful of a name, 2MASS J18082002-5104378 B. It's about one-sixth the size of our sun and dates back 13.5 billion years — just 300 million years younger than [the entire universe](<https://futurism.com/the-byte/giant-magellan-telescope-construction>).

## Old-School Metal

We know this star is so old because of its metal composition. As stars die and their leftover materials form new stars, the nuclear fusion reactions that power their cores give off heavy metals like gold and platinum. The more heavy metals, the more generations a given star must have been through.

But this star, still dimly twinkling, has such a small heavy metal content that astronomers think it comes from just the second generation of all the *stuff* in the universe — its celestial predecessor would have been formed in the Big Bang itself. For reference, our sun first emerged many generations after that, a 4.6 billion-year-old youngster compared to 2MASS.

## I Wish I Might

This star is far older than anything else [found in our galaxy](<https://futurism.com/the-byte/black-hole-milky-way>) so far, and its discovery opens the doors to finding even older stars.

That means we may soon learn more about how the Big Bang gave rise to the universe — and a better understanding of our own origins.

**READ MORE:** [Johns Hopkins Scientist Finds Elusive Star with Origins Close to Big Bang](<http://releases.jhu.edu/2018/11/05/johns-hopkins-scientist-finds-elusive-star-with-origins-close-to-big-bang/>) \[*Johns Hopkins University*\]

***More on old stars: [Scientists Now Know When the First Stars Formed in the Universe](<https://futurism.com/universe-first-stars-big-bang>)***

## Author
Dan Robitzki is a senior reporter for Futurism, where he likes to cover AI, tech ethics, and medicine. He spends his extra time fencing and streaming games from Los Angeles, California.

### Author social links  
[Twitter](<https://x.com/danrobitzski>)