The Fermi Paradox - Why the Universe Is Silent | 400 Billion Stars | Zero Signals

The Instant Before Time Existed | What Triggered The Big Bang | 13.8 Billion Years Ago

Spacedust

Could This Be Our New Earth? | 98% Earth-Like, But 4 Problems Make It Unlivable

Spacedust

"Dirt" from Two Alien Worlds on Earth

American Space Museum

The Real Reason a Generation Ship Never Reaches Its Destination

Sleeping Cosmos

Physicists Still Don’t Know What Happens at the Centre of a Black Hole

The Sleepy Scientist and The Snoozy Scientist

1 Septillion Stars | 30+ Types From Red Dwarfs to Supergiants | The Life of a Star Explained

Spacedust

The Impossible Discoveries That Made Us Rewrite Physics

Astrum Extra

The Entire Story of a Star, Explained Slowly

The Sleepy Scientist and The Snoozy Scientist

93 Billion Light-Years Wide - Yet Only 1% of What Exists | The True Scale of Reality

Magnetic Space

The Terrifying Scale of the Largest Planet We've Ever Found

Sleep On Science

Are We Alone? The Mystery of the Fermi Paradox | Free Documentary Space

Free Documentary - Space

The Biggest Galaxy Ever Discovered Is Bigger Than You Can Imagine

Space Like Im Sleepy

The Universe May Have Just Revealed the True Nature of Empty Space

PBS Space Time

Why Do We Exist? With Hakeem Oluseyi

StarTalk

Earth Froze 5 Times in 2 Million Years | What Really Caused the Ice Ages?

Chronicles of Planet Earth

Which Cosmic Threat Could End Earth First? | The Universe | Marathon

HISTORY

Light Doesn’t Actually “Travel” — The Truth is Stranger

Quiet Space and Deep Space Dreams

Science For Sleep | Are We Already Inside a Black Hole?

Science Before Sleep

Some Planets Rain Glass, Rubies and Iron... Fall Asleep to 200 Relaxing Facts About Exoplanets

The Drowsy Astronaut

Quantum Immortality | Why You’ve Already Died Hundreds of Times — But Don’t Remember | Documentary

Deep Space Stories and Into Deep Space