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PBS Space Time
What If Gravity is Not A Fundamental Force?
Is gravity just an emergent effect of entropy?

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...

PBS Space Time
Could We Move Planet Earth Across the Universe?
Could we turn our solar system into a spaceship and drive the Sun around the galaxy?

PBS Space Time
Was the Milky Way a Quasar?
Recently we discovered that its violent past was much more recent than we thought.

PBS Space Time
How We Know The Earth Is Ancient
How can we be sure about timescales so far beyond the capacity for human intuition?



PBS Space Time
What Happened Before the Big Bang?
We actually have a pretty good idea of what might have happened before the Big Bang.


PBS Space Time
Perpetual Motion From Negative Mass?
Challenge question: if 1kg of apples is $5 and 2kg is $10, how much is -1kg of apples?

PBS Space Time
Are Dark Matter And Dark Energy The Same?
Astronomers are the worst at naming things. Dark energy AND dark matter?

PBS Space Time
What are the Strings in String Theory?
How did physicists even come up with String Theory?

PBS Space Time
How Much Information is in the Universe?
The universe is full of stuff. But... is it actually made of stuff? Or information?

PBS Space Time
Will A New Neutrino Change The Standard Model?
One paper reports on a new particle outside the standard model: the sterile neutrino.

PBS Space Time
Have We SolvedThe Black Hole Information Paradox
Nothing can escape from below the event horizon- not matter, light, or even information.