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PBS Space Time
How to Signal Aliens
Season 1
Episode 18
Everyone has their own opinion as to whether or not aliens exist. But let’s assume they do for a second and we wanted to let them know we're here!!!! How should we signal our species' existence through the expanse of space? There are a few options, but which is the most effective and the cheapest? Find out in this week’s episode of PBS Space Time!
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14:59
Spacetime on its smallest scale is an ocean of black holes and wormholes...or so we think.
15:51
The gravitational wave background has probably been detected using a pulsar timing array.
15:05
Let’s explore how constant this speed of light fundamental constant really is.
14:39
Dark matter may be a quantum mechanical wave that literally holds galaxies together.
16:24
Has AI proven that the proton is made of 5 quarks rather than 3 quarks?
15:16
How close is too close for supernova explosions?
12:14
Could we turn our solar system into a spaceship and drive the Sun around the galaxy?
16:00
If we want to see quantum weirdness with our eyes, we’ll need Bose-Einstein Condensates.
16:42
Could LIGO find alien spacecraft accelerating to near light speed?
15:51
How can we tell the difference between fermions & bosons? Statistical Mechanics!