Why It’s Impossible for Any Species to Cross the Galaxy | Brian Cox

Описание: Crossing an entire galaxy sounds like the ultimate destiny of advanced civilizations — but what if the universe itself forbids it?

In this video, Brian Cox explores why no species, no matter how advanced, may ever be able to cross the Milky Way. From the speed of light and energy limits to radiation, time, biology, and relativity, the laws of physics place hard boundaries on what is possible.

The Milky Way spans over 100,000 light-years, and even traveling near light speed would take longer than most civilizations could survive. Space is not empty, stars are not fixed, and time itself becomes an enemy at galactic scales.

This is not science fiction — this is modern astrophysics.

If faster-than-light travel is impossible, if wormholes remain theoretical, and if energy requirements grow without limit, then perhaps intelligent life is naturally confined to small cosmic neighborhoods.

So where is everybody?

Maybe the answer is simple: the galaxy was never meant to be crossed.

🔭 Topics Covered:

Why light speed is the ultimate limit

The true size of the Milky Way

Radiation and deep-space survival

Why warp drives and wormholes may not work

The real meaning of the Fermi Paradox

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