Final answer:
Light from Proxima Centauri takes approximately 4.22 years to reach Earth, demonstrating the concept of astronomical distances and the speed of light.
Explanation:
Light from Proxima Centauri takes 4.22 years to reach Earth due to the star being 4.22 light-years away. The distance light travels can vary, for example, from the Sun to Alpha Centauri or from the Earth to Alpha Centauri.
When asked about the duration, the amount of time light takes to travel from Proxima Centauri to Earth is approximately 4.22 years, considering the speed of light as the factor of the journey.
Understanding the concepts of distance and speed, especially the speed of light, is essential in calculating travel times across astronomical distances.
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