Sunlight takes tens of thousands of years to reach us
Light takes eight minutes to travel 150 million kilometers to Earth.
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The fact
It can take up to 500,000 years to cross the Sun's core before emerging.
This light reaches us today after leaving the star before human societies appeared.
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Why it matters
Ce phénomène illustre les échelles de temps et les processus physiques à l’œuvre dans les étoiles, offrant une perspective sur la complexité de la lumière que nous recevons quotidiennement.