How come they don’t invent instant communications between earth and mars?

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answers:
Joan H say: We have to wait until quantum computers are up and working.
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Firestormer say: Who is going to answer the phone on Mars?
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say: I'm sure that they can. There is a band called 30 Seconds To Mars. They wouldn't have named themselves that if it wasn't possible.
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CarolOklaNola say: Because they can't.

The speed of light in a near vacuum is finite. It is the cosmic speed limit for the entire Universe.
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PhotonX say: Because of the speed of light, combined with the fact that no one has invented magic pixie dust yet.
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Bill-M say: Radio waves travel at the speed of light. Nothing can travel faster.
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Starrysky say: It would be easier to move Mars next to our moon than to figure out how to make messages travel faster than light. Maybe quantum entanglement might offer a way.
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vic say: Talking on a radio has nothing to do with physics, they only need to increase the frequency gain
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ioerr say: well it would be darn handy, but unfortunately it would involve breaking a pretty ironclad law of physics
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『ꀘꀤꋪꍏ』 say: If Mars is between 10 and 15 light-minutes away from Earth (distance traveled by an electromagnetic or luminous signal in 10 and 15 minutes), that is, between 180 and 270 million kilometers, the electromagnetic signal, of course, does not of smoke - would logically take between the 10 and 15 minutes mentioned :)
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Dummy say: To far away Plus lots of radiation to go through.
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