Proxima Centauri: 4.2 Light Yrs from Sun

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SUMMARY

Proxima Centauri is the closest star to the Sun, located 4.2 light-years away. Light from Proxima Centauri takes 4.2 years to reach Earth, indicating its vast distance. The discussion emphasizes understanding the nature of light's motion, specifically whether it travels at a constant speed or experiences acceleration. Participants are encouraged to research the appropriate formulas related to light's motion to derive further insights.

PREREQUISITES
  • Understanding of light speed and its implications in astrophysics
  • Familiarity with the concept of light-years as a measure of astronomical distance
  • Basic knowledge of motion equations in physics
  • Ability to research and apply scientific formulas
NEXT STEPS
  • Research the principles of light speed as defined by Einstein's theory of relativity
  • Learn about the motion of light and its implications in astrophysics
  • Study the equations of motion relevant to constant speed and accelerated motion
  • Explore the Alpha Centauri system and its components for a broader context
USEFUL FOR

Astronomy enthusiasts, physics students, and anyone interested in the fundamental properties of light and its behavior in space.

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The nearest star to the Sun is Proxima Centauri, a very faint component of the Alpha Centauri system. It takes light 4.2 years to reach us from Proxima. In the light's own frame, how far away is it?
 
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Do you know what kind of motion light has?
You could look that up and the kind of motion would tell you what formula to use for that motion.
 
No, that was the exact question.
 
So, does light move with constant speed or does it have accelerated motion?
If you don't know, look it up! When you know, write the formula(s) that apply to that kind of motion and see if one of them will find the answer you seek.
 

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