---
title: "Astronomers Just Spotted One of the Biggest Black Holes Ever"
description: "A team of astronomers discovered one of the biggest black holes ever detected in the Holmberg 15A galaxy, around 700 million light-years away."
date: "2019-08-06"
modified: "2019-08-06"
authors:
  - name: "Victor Tangermann"
    job_title: "Senior Editor"
    link: "https://futurism.com/authors/victor"
url: "https://futurism.com/the-byte/astronomers-biggest-black-hole"
categories:
  - "Astrophysics"
  - "Black Holes"
  - "Science & Energy"
  - "Space"
tags:
  - "Black holes"
  - "max planck"
  - "quasar"
  - "Supermassive Black Hole"
  - "the digest"
---

# Astronomers Just Spotted One of the Biggest Black Holes Ever

![](<https://futurism.com/wp-content/uploads/2019/08/astronomers-just-spotted-one-of-the-biggest-black-holes-ever1.jpg>)
*\<em\>Image: NASA\</em\>*

## Absolute Unit

A team of astronomers from the Max Planck Institute for extraterrestrial Physics in Germany just discovered one of the biggest black holes ever, about 700 million light-years away in the Holmberg 15A galaxy.

It's so big, it could fit our entire solar system inside it many times over. It's even larger than your average supermassive black hole — making it, in the terminology of the researchers, an "ultramassive" black hole.

## Absolute Unit

By analyzing the movement of the stars surrounding the galaxy using the European Southern Observatory's Very Large Telescope (VLT), the astronomers estimated the black hole dubbed Holm 15A\* to be about 40 billion times the mass of the Sun.

That makes it one of the biggest black holes ever recorded, as [*Science Alert* points out](<https://www.sciencealert.com/an-absolutely-gargantuan-black-hole-has-been-found-as-massive-as-40-billion-suns>). The biggest is likely the quasar [TON 618](<https://www.forbes.com/sites/startswithabang/2017/07/31/universes-largest-black-hole-may-have-an-explanation-at-last/#e8b93b7fc55b>), which harbors a black hole with 66 billion times the Sun's mass.

## Paper Trail

The [researchers' paper](<https://arxiv.org/abs/1907.10608>) was submitted to *The Astrophysical Journal* last month and awaits peer review.

What exactly caused Holm 15A\* and other gigantic black holes like it to form is still unknown — something astronomers are still hoping to nail down in future research.

But there are many theories, [one of which suggests](<https://futurism.com/dark-stars-supermassive-black-holes>) that their formation might have something to do with stars made out of dark matter merging together billions of years ago.

**READ MORE:** [Astronomers Just Found an Absolutely Gargantuan Black Hole The Mass of 40 Billion Suns](<https://www.sciencealert.com/an-absolutely-gargantuan-black-hole-has-been-found-as-massive-as-40-billion-suns>) \[*Science Alert*\]

**More on supermassive black holes:** *[These Bizarre Objects May Have “Seeded” Supermassive Black Holes](<https://futurism.com/dark-stars-supermassive-black-holes>)*

## Author
I've been at Futurism since 2017, where my role has evolved to encompass design, writing, and increasingly editing. I've always been fascinated by space exploration and advanced transportation, which I've leaned into by interviewing luminaries in those fields while closely following the dimensions of policy and regulation that allow next-generation projects to succeed -- or, sometimes, to fail. I'm also keenly interested in the effects of generative AI on society, policies, and democratic institutions, as well as clean energy, physics and biology, and the vagaries of tech leadership. My work for Futurism has been cited by publications including Ars Technica, Gizmodo, PC Magazine, Jalopnik, Fox News, and the New York Post. I spent my childhood living in locations including Manila, the Philippines, and Geneva, Switzerland, attended McGill University, and now live in Toronto, Canada. Before Futurism I worked at AskMen and a small photography studio. In my free time, I'm an avid gardener, foodie, and craft beer lover, as well as a maker of artisanal hot pepper sauces. I have a magnificent dog named Freida.

### Author social links  
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