100 WVIA Way
Pittston, PA 18640

Phone: 570-826-6144
Fax: 570-655-1180

Copyright © 2024 WVIA, all rights reserved. WVIA is a 501(c)(3) not-for-profit organization.
DONATE
Play Live Radio
Next Up:
0:00
0:00
0:00 0:00
Available On Air Stations
PBS Space Time

What If The Speed of Light is Not Constant?

Season 9 Episode 19 | 15m 05s

One of the most fundamental physics facts is that the speed of light in a vacuum is constant for all observers. But can we really be sure? In fact, variable speed of light theories have long been used to try to explain everything from dark energy to gravity itself. Let’s explore how constant this fundamental constant really is.

Aired: 07/18/23
Extras
Watch • 16:28
PBS Space Time
How To Detect Faster Than Light Travel
Faster than light travel may produce gravitational waves that we could see here on Earth.
Episode: S10 E15 | 16:28
Watch • 20:07
PBS Space Time
Can a Particle Be Neither Matter Nor Force?
All particles belong to two large groups: fermions and bosons.
Episode: S10 E14 | 20:07
Watch • 16:11
PBS Space Time
Will The Sun’s Magnetic Field Flip This Year?
Just how much stronger is this year’s solar activity going to get?
Episode: S10 E13 | 16:11
Watch • 17:25
PBS Space Time
Is It Impossible To Cross The Event Horizon? | Black Hole Firewall Paradox
So you’ve decided to jump into a black hole...
Episode: S10 E12 | 17:25
Watch • 12:51
PBS Space Time
What’s The Universe’s Strongest Particle Accelerator?
We only recently figured out where cosmic rays are coming from.
Episode: S10 E11 | 12:51
Watch • 13:28
PBS Space Time
Can Black Holes Unify General Relativity & Quantum Mechanics?
Black hole complementarity may force us to rethink what it means to say that it exists.
Episode: S10 E10 | 13:28
Watch • 20:15
PBS Space Time
Interstellar Expansion WITHOUT Faster Than Light Travel
To travel the stars without faster than light travel we’re going to need a generation ship.
Episode: S10 E9 | 20:15
Watch • 16:19
PBS Space Time
What Happens If You Jump Into A Black Hole?
Today we are jumping into a black hole. Again.
Episode: S10 E8 | 16:19
Watch • 15:36
PBS Space Time
Why Is The World Rushing Back To The Moon?
The Moon: humanity’s first destination beyond our atmosphere.
Episode: S10 E7 | 15:36
Watch • 15:07
PBS Space Time
How Eclipses Revealed Our Solar System
So how did humans figure out the solar system? Eclipses!
Episode: S10 E6 | 15:07
Latest Episodes
All
  • All
  • PBS Space Time Season 10
  • PBS Space Time Season 9
  • PBS Space Time Season 8
  • PBS Space Time Season 7
  • PBS Space Time Season 6
  • PBS Space Time Season 5
  • PBS Space Time Season 4
  • PBS Space Time Season 3
  • PBS Space Time Season 2
  • PBS Space Time Season 1
Watch • 16:28
PBS Space Time
How To Detect Faster Than Light Travel
Faster than light travel may produce gravitational waves that we could see here on Earth.
Episode: S10 E15 | 16:28
Watch • 20:07
PBS Space Time
Can a Particle Be Neither Matter Nor Force?
All particles belong to two large groups: fermions and bosons.
Episode: S10 E14 | 20:07
Watch • 16:11
PBS Space Time
Will The Sun’s Magnetic Field Flip This Year?
Just how much stronger is this year’s solar activity going to get?
Episode: S10 E13 | 16:11
Watch • 17:25
PBS Space Time
Is It Impossible To Cross The Event Horizon? | Black Hole Firewall Paradox
So you’ve decided to jump into a black hole...
Episode: S10 E12 | 17:25
Watch • 12:51
PBS Space Time
What’s The Universe’s Strongest Particle Accelerator?
We only recently figured out where cosmic rays are coming from.
Episode: S10 E11 | 12:51
Watch • 13:28
PBS Space Time
Can Black Holes Unify General Relativity & Quantum Mechanics?
Black hole complementarity may force us to rethink what it means to say that it exists.
Episode: S10 E10 | 13:28
Watch • 20:15
PBS Space Time
Interstellar Expansion WITHOUT Faster Than Light Travel
To travel the stars without faster than light travel we’re going to need a generation ship.
Episode: S10 E9 | 20:15
Watch • 16:19
PBS Space Time
What Happens If You Jump Into A Black Hole?
Today we are jumping into a black hole. Again.
Episode: S10 E8 | 16:19
Watch • 15:36
PBS Space Time
Why Is The World Rushing Back To The Moon?
The Moon: humanity’s first destination beyond our atmosphere.
Episode: S10 E7 | 15:36
Watch • 15:07
PBS Space Time
How Eclipses Revealed Our Solar System
So how did humans figure out the solar system? Eclipses!
Episode: S10 E6 | 15:07