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Why Haven't We Found Alien Life?

Why Haven't We Found Alien Life?

Season 2 Episode 7
10:33
Is an Ice Age Coming?

Is an Ice Age Coming?

Season 2 Episode 30
12:10
5 Ways to Stop a Killer Asteroid

5 Ways to Stop a Killer Asteroid

Season 2 Episode 8
8:31
How to Build a Blackhole

How to Build a Blackhole

Season 2 Episode 10
10:58
The Higgs Mechanism Explained

The Higgs Mechanism Explained

Season 2 Episode 11
7:49
Juno to Reveal Jupiter's Violent Past

Juno to Reveal Jupiter's Violent Past

Season 2 Episode 35
10:15
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PBS Space Time

Have Gravitational Waves Been Discovered?!?

Season 2 Episode 5

For the past 90 years, the predictions laid out Einstein's general theory of relativity have continued to be confirmed by experimental science. The last hold out is gravitational waves - the idea that certain gravitational events cause actual ripples in Spacetime. But have scientists done it?

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Season
Can the Universe Remember? Exploring Gravitational Memory
11:43
Gravitational tsunamis exist and we’re on the verge of being able to detect them.
How Can Humanity Become a Kardashev Type 1 Civilization?
18:40
Will we ever become a Kardeshev Type-1 civilization and how can we get there?
Do Neutron Stars Shine In Dark Matter?
14:05
New data is telling us that Neutron stars may make one of the most popular dark matter candidates.
What If the Cosmological Constant Is Not Constant?
15:14
Is Dark Energy Getting Weaker?
What If The Universe Did Not Start With The Big Bang?
16:08
Here’s the story we like to tell about the beginning of the universe.
The New Physics of Black Hole Star Capture | Extreme Tidal Disruption Events
17:44
We’ve never seen a TDE in the Milky Way, but we’ve seen them in distant galaxies.
Can We Test Quantum Gravity?
16:51
Let’s talk about quantum gravity experiments that can be done here on Earth!
Is Gravity RANDOM Not Quantum?
19:25
What if gravity isn’t weirdly quantum at all, but rather … just a bit messy?
Can We Create New Elements Beyond the Periodic Table
17:02
Have we reached the end of the line of discoverable elements?
Do Black Holes Have to Be Black?
15:32
Can we change the color of a black hole?
Was Penrose Right? New Evidence For Quantum Effects In The Brain
18:26
Learn about Nobel laureate Roger Penrose's idea of how consciousness is caused by quantum processes.
How To Detect Faster Than Light Travel
16:28
Faster than light travel may produce gravitational waves that we could see here on Earth.
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