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Questions tagged [communication]

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3 votes
1 answer
532 views

How much does the communications frequency of JWST vary?

This question (How many light seconds away is the JWST?), or rather one of its answers, got me thinking. Since the communications time is about 5±0.75 seconds, it varies by about 1.5 seconds per 3 ...
CJ Dennis's user avatar
  • 412
-3 votes
2 answers
94 views

What makes a star? [closed]

What are the properties of a star? How do astronomers classify the properties of stars?
ariana grande's user avatar
2 votes
2 answers
307 views

How to communicate Fine Structure Constant to aliens? [closed]

Sorry if this is not the right question for this channel, I just need to know and there is no good place to ask. It is said the Fine Structure Constant α is one of the most fundamental constants in ...
daniel.sedlacek's user avatar
2 votes
3 answers
278 views

How to listen to our world from 10,000 light years away?

If you were 10,000 light years away from all radio stations and digital broadcasts from our world, what equipment would be necessary to detect and capture some information like a voice or a photo? If ...
bandybabboon's user avatar
  • 4,354
8 votes
1 answer
295 views

How to send information from the far side of the Moon to the Earth?

Chang-E has just sent a shot after landing on the far side of the moon. It looks tricky, how can a device send information from a place that is oriented opposed to Earth?
nightcod3r's user avatar
3 votes
1 answer
281 views

Current delay for radio signals from the Mars InSight mission

I've been meaning to post it on the day when InSight landed but just got around to it now. When they broadcasted landing in real-time, it really wasn't in real-time because radio signals from Mars ...
Joe Schmoe's user avatar
2 votes
1 answer
96 views

Communication for far away satellites

Today in the tech age we have many communication technologies cell tower for cell phones, wifi, nuclear subs have some classified method of communication, etc. What communication technology is ...
Logikal's user avatar
  • 245
3 votes
2 answers
210 views

Power requirement for transmitting communications further than 1 ly?

The StarShot project from Breakthrough Initiatives aims to send a paper light spacecraft to alpha centauri using pressure from a laser located on earth at 20,000kms. What are the options for a ...
bandybabboon's user avatar
  • 4,354
1 vote
1 answer
85 views

How was Sugar Grove Station supposed to work?

Sugar Grove Station was an outpost designed to listen in on Soviet radio signals reflected off the moon. How would this work? Wouldn't the radio signals be distorted by the imperfect surface of the ...
Phiteros's user avatar
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