I don't think you ever said you wanted to be an astronaut. But I guess what you wanted was the same (in a way) because you always reached for the stars.

With your smile that was brighter and warmer than the sun, and your beauty comparable to that of the moon, you made the days and the nights. 

And in the same way that the sun, moon, stars and planets are, you were so far away.

Now you're even further.

I reach out into the void and can only feel sadness and the empty place you left behind.

If people who die become stars, than I shall look up into the night sky and find you there.