Get $20 off a yearly Nebula subscription.
Sign up now
Get 20% off a subscription to Nebula.
Sign up now

The best way to watch and support Isaac Arthur

Zero ads. Early video releases. Exclusive content.
Get started for $2.50/month
Billed $30 annually. This is a special discounted price for fans of Isaac Arthur.
Get started for $4/month
This is a special discounted price for fans of Isaac Arthur.
Nebula on various devices

Isaac Arthur on Nebula

Conformal Cyclic Cosmology

Conformal Cyclic Cosmology is a theory by physicist Roger Penrose for how the Universe might undergo cycles of decay and expansion, resetting over aeons, and in this Nebula Exclusive we'll explain the theory and how it might be proved.

Planets vs Megastructures

A Nebula Exclusive examining the pros and cons of terraforming planets versus constructing immense space habitats and artificial worlds.
“Nebula is a place where creators can try out new ideas and formats, and a great way for audiences to support their favorite shows without middlemen.”
Isaac Arthur

Recommended by Isaac Arthur

Joe Scott
Real Engineering
Simon Clark

What is Nebula?

Nebula is the home of premium films, series, essays, podcasts, and classes from your favorite creators.
For just $4/month, a Nebula subscription includes:
For just $2.50/month (billed annually), a Nebula subscription includes:
Full-length documentaries, collaborative series, animated specials, and more.
Only on Nebula.
Learn at your own pace with exclusive classes taught by your favorite creators.
Bonus material including extended cuts, companion videos, and interviews. Only available on Nebula.
Early releases available on Nebula before anywhere else.

Support Creators

Nebula is creator-owned and operated.

No Pre-roll Ads

No need to skip what isn't there.

Download Videos

Watch offline in our mobile apps.

Watch Nebula

Find the Nebula app for your device, or watch online at
Apple TVGoogle TVFire TVRoku
LG Smart TVSamsung Smart TV
Download on the Apple App StoreGet it on Google Play

Subscribe for $4/month

Subscribe for $2.50/month

Billed $30 annually.

Over 650,000 people are learning, watching, and supporting creators like Isaac Arthur on Nebula. Sign up now to join them.