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SIO360: How Gravitational Lensing Helps Us Understand the Universe

Serious Inquiries Only

CHAPTER

The Cosmological Concept and the Acceleration of the Universe

The expansion of the universe is in fact accelerating. So we had to come back to this and say, well, maybe that cosmological concept was actually right after all. It could still be some other substance. If by chance it's a bit off, then we'll find that this value, which we call lambda, this is just the variable we've chosen to assign for this.

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