Answer:
What is long and slim, works in light. Has but one eye, and an awful bite?
I'm a god. I'm a planet. I measure heat.
What is it that makes tears without sorrow and takes its journey to heaven?
Surname of the pilot of the Millennium Falcon.
You throw me out when you want to use me and you take me in when you don't want to use me. Who am I?
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?