The Observation That Reopened a Cosmic Debate

For decades, the Bullet Cluster has been considered one of the strongest pieces of evidence for dark matter. But new observations are reviving an alternative possibility: what if our understanding of gravity is incomplete?

As fresh data challenge long-standing assumptions, scientists are once again debating whether the universe is shaped by invisible matter or by laws of physics we have yet to fully understand.

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This episode includes AI-generated content.