Calculating speeds of radio to a planet

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To calculate the time it takes for a radio message to reach a planet, the key information required includes the distance from Earth to the planet and the speed of light. The journey time can be determined by dividing the distance by the speed of light. Additionally, understanding unit conversion may be necessary to ensure accurate calculations. The discussion emphasizes the importance of these fundamental concepts in the calculation process. Overall, having the correct distance and speed of light is essential for determining radio communication times with other planets.
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Hi! I need help with the method to approach a question, if I wish to calculate how long it will take for a radio message to reach a certain planet (just the general concept), what will be the key pieces of information I require?

I know I need: the distance from Earth to said planet
the distance traveled by the radio message (speed of light x journey time)

What else would I require? Any help is appreciated on this question. Thank you.
 
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The distance traveled is enough information to calculate the journey time.
 
Well, that and the speed of light, but you can look that up. :wink:
 
russ_watters said:
Well, that and the speed of light, but you can look that up. :wink:
Well, yeah. There's also a good chance you'll need to know how to convert units.
 

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