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The Universe Is Stranger Than It Looks

Why Everything You See Is Already in the Past

The Universe Is Far Bigger, Older, and Stranger Than It Looks

Space and Time Are Not What You Think

Space and Time Merge Into a Single Fabric

Gravity Is the Bending of That Fabric

Black Holes and the Death of Stars

A Dying Star Can Collapse Into a Black Hole

Past the Event Horizon, Every Path Leads Inward

The Big Bang and the Shape of Time

The Universe Itself Had a Beginning

Time Has a Direction, and Entropy Sets It

The Limits of What We Can Know

Quantum Uncertainty Puts a Limit on Prediction Itself

Why the Two Best Theories in Physics Still Don't Agree

Putting Cosmic Thinking Into Practice

One Unified Theory Would Explain All of This at Once

Thinking Like a Cosmologist Changes How You Handle Uncertainty

Check Your Understanding

Reading the Sky Correctly

The Nature of the Event Horizon

Why Two Theories Still Disagree

Put Thirteen Billion Years in the Right Order

Find Out What Happens at Each Distance

Separate the Myths From the Physics

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A clear, idea-first tour of modern cosmology built around Stephen Hawking's "A Brief History of Time" — space, time, black holes, the Big Bang, and why our two best theories of physics still don't fully agree.

A clear, idea-first tour of modern cosmology: why the night sky is a time machine, how space and time merge into one fabric, what really happens at a black hole's edge, why the universe had a beginning, and why our two best theories of physics still don't fully agree.

Space, Time, and the Big Bang: How the Universe Really Works

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