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The invisible universe
4 chapters
56 assets
by teacher · 10 jul 2026
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Chapter 1
The mystery of missing mass
1
The Swiss astronomer who saw a cosmic ghost
2
The glass ceiling shattered by spinning galaxies
3
Why gravity needs an invisible helper
4
What dark matter is definitely not
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Chapter 2
Mapping the invisible
1
Cosmic magnifying glasses in deep space
2
The Bullet Cluster smoking gun
3
Spiders of the cosmos spinning a web
4
Deep underground hunts for ghost particles
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Chapter 3
The runaway cosmos
1
The shocking discovery of cosmic acceleration
2
What on earth is dark energy
3
Einstein's self-proclaimed biggest blunder
4
The cosmic recipe of everything
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Chapter 4
The ultimate fate of the universe
1
The cold quiet of the Big Freeze
2
The violent tearing of the Big Rip
3
The ancient baby picture of the cosmos
4
The great cosmic tug-of-war
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YOUR GOAL
Master of The invisible universe
