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  • Sun's Energy: How Long Does It Take to Reach Earth?
    The radiation we see and feel from the Sun today was produced in nuclear reactions about 8 minutes ago.

    Here's why:

    * Light travels at a finite speed: Light travels at approximately 299,792 kilometers per second (186,282 miles per second).

    * Distance from Earth to the Sun: The average distance from Earth to the Sun is about 149.6 million kilometers (93 million miles).

    * Calculation: Dividing the distance by the speed of light gives us a time of about 8 minutes.

    Therefore, the photons we see and feel from the Sun today were emitted from the Sun's surface roughly 8 minutes before they reach us.

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