Answer:
Name for zenith
A beacon from home to guide your way. It can be a lifesaver on a stormy day. What is it?
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around
The weapon of choice to create the biggest shock.
You heard me before, yet you hear me again, then I die. Until you call me again.
Brings the sky a lot closer.