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How to Signal Aliens

How to Signal Aliens

Season 1 Episode 18
6:14
Can a Circle Be a Straight Line?

Can a Circle Be a Straight Line?

Season 1 Episode 20
8:16
The Leap Second Explained

The Leap Second Explained

Season 1 Episode 21
2:20
Can You Trust Your Eyes in Spacetime?

Can You Trust Your Eyes in Spacetime?

Season 1 Episode 22
9:23
Do Events Inside Black Holes Happen?

Do Events Inside Black Holes Happen?

Season 1 Episode 25
11:50
What if Singularities DO NOT Exist?

What if Singularities DO NOT Exist?

Season 10 Episode 1
14:44
What Happens If We Nuke Space?

What Happens If We Nuke Space?

Season 10 Episode 2
15:13
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PBS Space Time

Is Gravity An Illusion?

Season 1 Episode 17

Most of us take gravity as an assumed part of our living realities, but why? Basic physics introduces us to the concept of gravity from a Newtonian sense, but when you start factoring Einstein into an understanding of gravity, things get… weird. For example, gravity may simply not exist. Why? Watch this week’s episode of PBS Space Time and find out why gravity may be an illusion!

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Season
Black Hole Harmonics
13:11
We’ll explore the papers that claim to have detected black hole harmonics.
How Many Universes Are There?
14:03
The universe is big, but it’s peanuts compared to the eternally inflating multiverse
Is Pluto a Planet?
14:03
You know what a planet is, right? A big round thing that orbits a star. Uh, not so fast.
Could We Terraform Mars?
15:33
Could we terraform Mars?
Is Earth's Magnetic Field Reversing?
12:46
Is Earth's Magnetic Field Reversing?
How To Become an Astrophysicist
12:45
Are you thinking about becoming (or ever just wondered how one becomes) an Astrophysicist?
What Happened Before the Big Bang?
10:23
We actually have a pretty good idea of what might have happened before the Big Bang.
What Caused the Big Bang?
13:12
What Caused the Big Bang?
Did Time Start at the Big Bang?
12:30
Did Time Start at the Big Bang?
The Quantum Internet
11:35
The Quantum Internet
Thorium and the Future of Nuclear Energy
16:05
Thorium and the Future of Nuclear Energy
How Black Holes Kill Galaxies
11:20
It turns out black holes may be responsible for ending star formation across the galaxy.
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