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How long would it take..mars to earth radio transmission?

Asked by rveneciajr 22 days ago, 4 answers.

If I send a message from mars.How long before some one responds from Earth?

Answered by ethmer on Oct 30, 2009, 01:06PM
3529 answers

Find out how many miles it is from Mars to Earth.

Divide that number by 186,000 which, I believe, is the approximate speed of light per second.

Divide that answer by 60 to find out the number of minutes for the trip from Mars to Earth.

Double your answer if you want to know how long it would take, minimum, for an answer to get back to you.

1 person thought this was helpful

Answered by arachnid (Online now) on Oct 30, 2009, 02:21PM
1771 answers

It varies greatly based on where they are in their respective orbits. You can calculate the minimum time by taking the _difference_ between the orbits of the earth and mars (this would occur when they are at the same point in their orbit), and the maximum time by calculating the _sum_ of their orbits (this would occur when they are on opposite sides of the sun). You need to double the figures for a round-trip.

Answered by theta010 on Nov 03, 2009, 04:49PM
73 answers

At their closest. it takes 8 min. yay science geeks happy

Answered by arachnid (Online now) on Nov 03, 2009, 11:50PM
1771 answers

***At their closest. it takes 8 min. yay science geeks***

No, at their closest it takes a little under 3 minutes.

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