Sunlight reaches Earth in 8 minutes but spends 170,000 years escaping the Sun
Photons of sunlight travel the 150 million kilometres from the Sun to Earth in just 8 minutes. However, before escaping the Sun's surface, each photon spends approximately 170,000 years bouncing through the solar interior, absorbed and re-emitted countless times by layers of plasma. This means the sunlight warming your skin today was generated long before modern humans existed.
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