What If Dark Matter Is Just Black Holes?

PBS Member Stations rely on viewers like you. To support your local station, go to

↓ More info below ↓

Sign Up on Patreon to get access to the Space Time Discord!

It may be that for every star in the universe there are billions of microscopic black holes streaming through the solar system, the planet, even our bodies every second. Sounds horrible - but hey, at least we’d have explained dark matter.

Want a very deep understanding of Black Holes? Check out the Black Hole playlist:

Check out the Space Time Merch Store

Sign up for the mailing list to get episode notifications and hear special announcements!

Hosted by Matt O'Dowd

Written by Matt Caplan & Matt O'Dowd

Graphics by Leonardo Scholzer, Yago Ballarini, Pedro Osinski, Adriano Leal & Stephanie Faria

GFX Visualizations: Katherine Kornei

Directed by Andrew Kornhaber

Assistant Producer: Setare Gholipour

Executive Producers: Eric Brown & Andrew Kornhaber

End Credits Music by J.R.S. Schattenberg

Special Thanks to Our Patreon Supporters

Big Bang

Leo Koguan

Rick DeWitt

Sandy Wu

Matthew Miller

Brodie Rao

Scott Gray

Ahmad Jodeh

Radu Negulescu

David Nicklas

Alexander Tamas

Morgan Hough

Juan Benet

Vinnie Falco

Fabrice Eap

Mark Rosenthal

Quasar Supporters

Hank S

Christina Oegren

Mark Heising

Hypernova Supporters

william bryan

Scott Gorlick

Nick Berard

Paul Stehr-Green

MuOn Marketing

Russell Pope

Ben Delo

L. Wayne Ausbrooks

Nicholas Newlin

Adrian Posor

Антон Кочков

John R. Slavik

Mathew

Danton Spivey

Donal Botkin

John Pollock

Edmund Fokschaner

Joseph Salomone

chuck zegar

Jordan Young

m0nk

John Hofmann

Timothy McCulloch

Gamma Ray Burst Supporters

G Mack

The Mad Mechanic

Juan David Gil Wiedman

Ellis Hall

Alexey Kamenskiy

John H. Austin, Jr.

Andrew Macleod

Diana S

Douglas Drane

Ben Campbell

Lawrence Tholl, DVM

Faraz Khan

Almog Cohen

Alex Edwards

Nick

Ádám Kettinger

Sylvain Leduc

Anthony Kahng

MD3

Endre Pech

Daniel Jennings

Cameron Sampson

Pratik Mukherjee

Geoffrey Clarion

Nate

Darren Duncan

Russ Creech

Jeremy Reed

Derek Davis

Eric Webster

Steven Sartore

David Johnston

J. King

Michael Barton

Christopher Barron

James Ramsey

Drew Hart

Justin Jermyn

Mr T

Andrew Mann

Jeremiah Johnson

fieldsa eleanory

Peter Mertz

Kevin O'Connell

Isaac Suttell

Devon Rosenthal

Oliver Flanagan

Dawn M Fink

Bleys Goodson

Darryl J Lyle

Robert Walter

Bruce B

Ismael Montecel

Simon Oliphant

Mirik Gogri

Mark Daniel Cohen

Brandon Lattin

Nickolas Andrew Freeman

Shane Calimlim

Tybie Fitzhugh

Robert Ilardi

Astaurus

Eric Kiebler

Craig Stonaha

Martin Skans

Michael Conroy

Graydon Goss

Frederic Simon

Tonyface

John Robinson

A G

Kevin Lee

Adrian Hatch

Yurii Konovaliuk

John Funai

Cass Costello

Geoffrey Short

Tristan Deloche

Bradley Jenkins

Kyle Hofer

Tim Stephani

Daniel Stříbrný

Luaan

AlecZero

Vlad Shipulin

Cody

Malte Ubl

King Zeckendorff

Nick Virtue

Scott Gossett

Dan Warren

Patrick Sutton

John Griffith

Daniel Lyons

DFaulk

GrowingViolet

Kevin Warne

Andreas Nautsch

Brandon labonte