Topic: How to Get to Mars
in Forum: General Non-Vette Discussion
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This is incredible!
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corvette440hp
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Greer, SC - USA
Joined: 3/13/2012
Posts: 264
Vette(s): 1978 Black with Viking mural painted under hood AM/FM/CB radio, T-top and a 2013 Cyber Gray Grand Sport Coupe, 2LT for my daily driver
anybody know how long it takes to get a radio signal to and from that distance?
Warning: The surgeon general has declared that it is NOT unhealthy to smoke your competition AND I just discovered that my corvette is a hybred. It burns gas and rubber!
VikingVette said: anybody know how long it takes to get a radio signal to and from that distance?
Radio signals are electromagnetic waves, such as light or X-ray. The speed of electromagnetic waves in vacuum, is 300000km/sec (approximately).
In order to calculate the time of travel with this speed from Earth to Mars, we need to know the distance.
When the Mars and the Earth are at the opposite sides of the Sun, the distance is the largest: approximately: 378 million km. The time needed for an electromagnetic wave to cover this distance is approximately: 21 minute.
The closest distance between Mars and Earth is 78 million km, the time in this case is: 4.3 min.
So the time of travel between Earth and Mars is between 4.3 minutes and 21 minutes, depending on the actual distance between the two planets.
Answered by: Ferenc Szekely, Ph.D., Physicist, ELTE, Budapest, Hungary
corvette440hp
in Forum: General Non-Vette Discussion
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