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Posted on 09/27/2025 1:12:45 AM PDT by blueplum
NASA has just pulled off a deep space first that could forever change the way we communicate beyond Earth. A silent beam of light traveled an unimaginable distance—and then something remarkable happened.
In a major step toward high-speed space internet, NASA has successfully exchanged laser-encoded messages with a spacecraft over 350 million kilometers from Earth. The story, reported by IFLScience, marks the success of one of the most ambitious space communication tests ever attempted—and may open the door to a future where humans on Mars send back livestreams in real time....
To carry out this experiment, NASA’s Jet Propulsion Laboratory (JPL) used its Table Mountain Facility in California to send a focused 3-kilowatt laser beacon toward Psyche. Once the spacecraft locked onto the beam, it fired back its own optical signal carrying encoded information....
Capturing the faint returning signal required the capabilities of Caltech’s Palomar Observatory in San Diego County. The observatory’s large dome and sensitive detectors picked up the returning photons, decoding them into meaningful data...
(Excerpt) Read more at dailygalaxy.com ...
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“I am Mister Ed”
The Earth-Mars delay is between 4 and 24 minutes depending on the distance.
https://blogs.esa.int/mex/2012/08/05/time-delay-between-mars-and-earth/
Dont laser beams travel at the same speed as radio waves? How can they have instant communications?
Yes. They can’t.
Two benefits of laser comms is they’re harder to intercept and don’t dissipate as easily as radio waves.
Right. Sure.
Nudge me when NASA manages laser propulsion like the Moties used in Niven and Pournelle’s The Mote in God’s Eye. Excellent first contact science fiction by two of the best.
But what if I am in a car travelling at the speed of light and I turn on the headlights?
The speed limit is C. It’s the law .
Written by an A.I.
Unless by "lasers" they mean "Star Trek-style sub-space communication," this is not possible.
Regards,
Now, we just have to get the sharks up there somehow…..
What if the car is a Tesla?
Will they have to eat ze bugs?
“Written by an A.I.”
Can it tell me how a thermos bottle knows whether its contents are hot or cold? I’ve been wondering about that ever since I heard an old joke about it.
The rate of data transmission can increase, like increasing from 2G to 5G cell phones, but the message itself still travels at the lead of spite, oops, I mean speed of light.
We had a laser link at CU Boulder between the Engine Center and the Comp. Center. Worked well except in weather.(early 70’s)
The message: Obama is a fake.
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