SSH question

[M.Lewis]

I'm sure the answer to this question is incredibly simple and I have 
looked through the archives, but I really don't know what to look for 
(hence the poor subject).

I want to ssh into a remote machine, start a download (say wget -c 
xyz.iso), then close my ssh session, but still maintain the download 
while I'm no longer logged into the remote machine.

Can this be done? If so, how?

Thanks,
Mike

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