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What is Energy?

What is Energy?

Season 4 Episode 12
11:20
The Death of the Sun

The Death of the Sun

Season 4 Episode 13
9:01
The Trebuchet Challenge

The Trebuchet Challenge

Season 4 Episode 14
8:25
Should Space be Privatized?

Should Space be Privatized?

Season 4 Episode 15
9:16
Hawking Radiation

Hawking Radiation

Season 4 Episode 16
12:00
The Andromeda-Milky Way Collision

The Andromeda-Milky Way Collision

Season 4 Episode 18
9:15
The Unruh Effect

The Unruh Effect

Season 4 Episode 19
10:52
Using Stars to See Gravitational Waves

Using Stars to See Gravitational Waves

Season 4 Episode 21
8:36
Black Hole Swarms

Black Hole Swarms

Season 4 Episode 22
8:33
The Star at the End of Time

The Star at the End of Time

Season 4 Episode 23
8:55
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PBS Space Time

Kronos: Devourer Of Worlds

Season 4 Episode 11

What happens when a star eats its planets? Find out on today’s Space Time Journal Club.

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Season
We Found Galaxies Too Old for the Universe
17:41
Galaxies older than the universe? Webb's findings keep defying our best explanations.
Earth’s Core Should Be Impossible. A New State of Matter Explains It.
16:16
Earth's core: solid or liquid? Yes — we know more about distant galaxies than our own interior.
Something Disturbing Happens When You Solve Einstein's Equations This Way
14:42
Gödel found a time-travel solution in General Relativity, revealing spacetime can loop on itself.
Martian Soil Is Deadly. And That's Why It Might Support Life
18:46
Tardigrades can survive almost anything—even most of Mars. But one Martian chemical stops even them.
Is the LHC Creating Dark Matter?
18:18
The Higgs boson may open a portal to hidden particles that could explain dark matter.
Dark Energy Is Driving the Universe Apart. We May Finally Know Why.
19:02
The universe expands faster. “Dark energy” may not be constant after all.
Our Only Chance To Finally Unlock The Gravity Particle
16:26
There’s a new generation of experiments that may unlock the gravity particle.
The Particle We’ve Been Chasing for 30 Years Might Not Exist
18:33
The universe thrums with quantum fields, except something may be missing: the sterile neutrino.
The Universe Itself Might Be Hiding the Gravity Particle From Us
18:42
Gravitons, the particle of quantum gravity, may be impossible to detect.
Heisenberg Made a Discovery in 1925. We Still Can't Explain It
25:02
2025 was the international year of quantum science, but today we examine its origins.
Do We Live in the Rarest Solar System In The Universe? We're about to find out!
21:17
We’ve found lots of “habitable” worlds but we don’t know what factors are needed for life.
The Gravity Particle Should Exist. So Where Is It?
21:31
What is the graviton, and does it even exist?
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