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Old 09-11-2018, 08:57 PM
 
Location: Westwood, MA
3,608 posts, read 4,776,709 times
Reputation: 4663

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Quote:
Originally Posted by Tek_Freek View Post
CD is aggressive about posters recommending other forums. They are the competition after all.
I like city-data (4071), but it's not really competing with reddit (18) or Quora (92).

The formats are also quite different. Reddit is a bunch of single posts with comments. Quora is a question and answer site. City-data is a much more traditional forum. They're all on the internet, but so are Facebook and Google. There are definitely websites that are pretty much direct competition for city-data, but I don't think any of those sites are.

City-data is great for discussion, but not really designed to help people find good answers to specific, especially technical, questions. It can be done, and there some knowledgeable people, but the activity level is pretty low and there just aren't enough posters that even if everyone who posted regularly were an expert on some aspect of science there would still be a lot of pretty big gaps.
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Old 09-12-2018, 01:07 AM
 
28,624 posts, read 40,604,922 times
Reputation: 37303
No one said those two were the ones in question. It could be any forum that the people who run CD deem competition.
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Old 09-15-2018, 03:51 PM
 
Location: Somewhere in northern Alabama
18,544 posts, read 55,469,830 times
Reputation: 32286
Quote:
Originally Posted by Siberiaboy View Post
I can’t find an astrophysics forum for topics like

“How would an observer see an object 4 light years away in space traveling towards us at such and such a velocity

Is this the right place for that?
The question is improperly formed. An observer would "see" it with the naked eye, telescope, etc. Is the blue shift effect the intent of the real question, or is this one of those "... and suddenly the apocalypse appears without anyone knowing" type of questions? Those work better with radiation heading our way instead of an object.
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