TED-ED: What light can teach us about the universe - Pete Edwards

The video explores fundamental questions about the universe, focusing on how light helps astronomers gather information about distant objects. It explains the Doppler Effect's role in understanding cosmic motion and highlights Edwin Hubble's discovery of the universe's expansion, supporting the Big Bang Theory. The video also discusses the mysterious dark energy driving the universe's accelerating expansion.

What new insight or understanding did you gain from this video?