The following responds to mjtolsma.
Light comes to us continuously from any given distant object in the universe. We see that object only by light that is arriving from that object at the present instant. Ten minutes from now, we'll see that object by light that left it ten minutes later than did the light by which we saw it ten minutes ago. The time between when light left the object and when we see it depends on how long it takes the light to pass from the object to us,.
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