Calculating speeds of radio to a planet

[cinematic]

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.

 

[Redbelly98]

The distance traveled is enough information to calculate the journey time.

 

[russ_watters]

Well, that and the speed of light, but you can look that up.

 

[Redbelly98]

Well, that and the speed of light, but you can look that up.

Well, yeah. There's also a good chance you'll need to know how to convert units.

 

[sardar]

To calculate the speed of a radio message to a certain planet, you will also need to know the speed of light, which is approximately 299,792,458 meters per second. This is a constant value and is crucial in calculating the time it will take for the message to reach the planet. Additionally, you will need to know the type of radio transmission being used, as different frequencies and transmission methods may affect the speed of the message. Furthermore, the atmospheric conditions of both Earth and the planet can also impact the speed of the message. Other factors to consider include any potential obstacles or interference that may occur during the transmission. All of these pieces of information are important in accurately calculating the speed and time it will take for the radio message to reach the designated planet.