The Quantum Cat

The Quantum Cat

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How to Learn Physics for Free
A guide for the curious
 • 
Alastair Williams
5
What Lies Beyond: Exploring Interstellar Space
Forget reaching the stars, first we need to explore the space between them
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Alastair Williams
6
Starship: The Most Ambitious Spacecraft Ever Built
Musk dreams of sending Starship to Mars. First he'll need to prove it works.
 • 
Alastair Williams
1
The Sun and Superflares
Just how big a flare is the Sun capable of producing?
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Alastair Williams
10
How Gaia Mapped The Milky Way
On Gaia, the Tabula Rogeriana, and how we are building the first true map of our galaxy.
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Alastair Williams
Babylonia II: The Beginnings of Time
On the origins of calendars and clocks
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Alastair Williams
2
The Week in Space and Physics: A World With Two Suns
On binary star solar systems, neutrinos and protons, a wobble in the Earth's core and icy interstellar clouds
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Alastair Williams
Greeks II: The Cult of Numbers
On the Pythagoreans, their fear of irrational numbers, and the search for universal music.
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Alastair Williams
The Week in Space and Physics: The First Molecules of Water
On the origins of water, a survey of the Radcliffe Wave, Moon landings, and the eighth flight of Starship.
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Alastair Williams
3
The Week in Space and Physics: When Worlds Fall Apart
On disintegrating planets, exocomet clouds, moon landers, and the end of Gaia.
 • 
Alastair Williams
1
The False Colours of Astronomy
The stars don't look like the telescopes say they do
 • 
Alastair Williams
5
How to Destroy a Space Station
The end of the International Space Station will soon be upon us. What should we do with it?
 • 
Alastair Williams
8
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