Say if the universe began 15billion years ago

Would we not be able to see light that has come from planets over 16billion light years away. What would be visible through a telescope, or would there just be black.

The estimated age of the universe is roughly 13.75 billion years. The early universe was opaque to light, the exact duration of this 'foggy' period is not completely known, but a ball park of 480 million years or so seems accraute. This puts the age of the oldest possible visible light at around 13.3 billion years.

Now, it gets more complicated than that. The universe has been expanding the entire time. So, let's say we see a distant galaxy, and it the caption under the picture says it is 13.3 billion light years away. This is the *light travel time.* It was much closer than that when the light we are seeing from it now was first produced... and it is much farther than that now, if we were capable of measuring the true distance in *real time.*

It depends on how advance the technology the other planet have. our galaxy is one of the youngest in the universe and so are we, humans species. So, if they have the same technology as we have, then the answer to your question is : we are not visible to them nor they are to us. But many people believe that aliens already have spotted us and have came to earth even in ancient times. watch Ancient aliens (History Channel) in YOUTUBE

Search Google for "Hubble Deep Field"

This is the deepest image taken so far, the shutter on the camera was left open for about 10 days (Your pocket camera shutter opens for about 1/100th of a second)

This picture shows galaxies 13.7 billion light years away, this is the farthest we have seen.

Don't know where you got the figure of 16 Bly

dont get it? try reasking