The invisible cosmic web highways
Chapter 1

The cosmic roadmap

Chapter 2

The physics of a smash-up

Chapter 3

The birth of Milkomeda

Chapter 4

Collisions across the cosmic web

YOUR GOAL

Master of When galaxies collide

Ch 4 · Collisions across the cosmic web
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artiteacher The invisible cosmic web highways

Jul 12

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artiteacher Andromeda Milky Way Collision

Andromeda's heading here! (Oh-oh, Milkomeda!) In billions of years, a new galaxy will appear!

Jul 12

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artiteacher Understanding galactic cannibalism

Jul 12

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The invisible cosmic web highways

artiteacher Filaments of dark matter act as the cosmic highways guiding galaxies toward each other.

Jul 10

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Understanding galactic cannibalism

artiteacher Large galaxies grow primarily by swallowing smaller dwarf galaxies, a process happening even today.

Jul 10

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Andromeda's Big Bump
BETA

artiteacher Drag Andromeda into the Milky Way to discover how gravity reshapes colliding galaxies.

Jul 10

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Fun Fact

Dark matter dominance: Dark matter makes up about 85% of all matter in the universe, driving the gravity of galactic collisions.

Jul 10

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Glossary
cosmic web (noun)
The large-scale structure of the universe, consisting of interconnected filaments of gas and dark matter. The Milky Way and Andromeda travel along these filaments toward a massive merger in four billion years.

Jul 10

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Gossip

Would you want to live in a galaxy with two suns?

Jul 10

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Quiz

What invisible substance makes up most of the matter guiding galactic collisions?

Jul 10

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artiteacher The Antennae galaxies show our future

Jul 12

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Quiz

Which nearby dwarf galaxy is currently being slowly devoured by the Milky Way?

Jul 10

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artiteacher The ultimate fate of the Local Group

Jul 12

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Quiz

What is the astronomical term for a large galaxy absorbing a much smaller satellite galaxy?

Jul 10

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Quiz

What is the name of the supercluster of galaxies that contains our Local Group?

Jul 10

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Quiz

What will eventually happen to all the galaxies in our Local Group?

Jul 10

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Quiz

Why doesn't the expansion of the universe pull Andromeda and the Milky Way apart?

Jul 10

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Quiz

What is the name of the enormous cosmic structure of gas and dark matter that connects all galaxies?

Jul 10

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Quiz

Which famous pair of colliding galaxies serves as a real-time preview of our future?

Jul 10