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PBS Space Time

The Strange Universe of Gravitational Lensing

In the world of our mind’s eye, light travels in a straight line. In reality, spacetime is deflected and magnified through the lens of gravity. Find out how this works and what it allows us to learn about our universe in this episode of Space Time.

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The New Crisis in Cosmology
13:08
The crisis in cosmology has actually gotten worse, which means we may be onto something!
How Does Gravity Affect Light?
13:24
We explore if there is a true connection between light and gravity.
Does Time Cause Gravity?
8:55
We explore that it's the warping of time that causes gravity.
Gravitational Wave Background Discovered?
13:54
There's a galaxy-spanning gravitational wave detector that has provided a breakthrough.
Is Dark Matter Made of Particles?
13:03
We try to make contact with dark matter particles and enter into the Dark Universe.
Can We Break the Universe?
12:32
We delve into some of the most famous paradoxes of special relativity.
What Happens During a Quantum Jump?
12:43
Transitions of quantum systems have always defied observation...until now.
Navigating with Quantum Entanglement
12:11
Erwin Schrödinger provides a new perspective that helps us navigate quantum mechanics.
The Supernova At The End of Time
12:12
This is a new type of supernova that can only happen at the end of the universe.
Why Do You Remember The Past But Not The Future?
12:07
Why do we remember the past and not the future?
The Arrow of Time and How to Reverse It
10:36
It's time to begin our journey towards really understanding time.
Can Free Will be Saved in a Deterministic Universe?
13:42
Space Time weigh in on physics and free will.
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