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In the wake of the Russian launch failure to send more astronauts to the ISS, it got me thinking. How many "ready to fly" ships are there? And, if an accident were to happen and the current ISS crew needed to be rescued, how long would it take to respond?

How many in a month? 7 days or less?
Less than a day?

I'll take estimates!

What's the amount of government agencies and private companies that have or are working on a manned mission.

How many assembled launch systems are there?

How long would it take to assemble a whole launch system?


marked as duplicate by Antzi, Mark Omo, Nathan Tuggy, GdD, Jan Doggen Nov 15 '18 at 8:46

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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    $\begingroup$ Welcome to Space! This question does ask about the same scenario than the older question linked above. You need to edit the question to make it unique. I think the "ready to fly" (in ___ days) is distinct enough from the old question. However, the agencies/companies and how long it would take is already covered by the older question. $\endgroup$ – DrSheldon Nov 15 '18 at 5:28