Answer:
Small, containing light, You'll need it in the dark, It will provide that spark, and shine into the night. Will light up any pyre, 'Cause it can help make a fire.
I reach for the sky, but clutch to the ground. Sometimes I leave, but I am always around
This is a dead giveaway
What get's more wet while it dries?
What has been around for millions of years but is never more than a month old?
If you count 20 houses on your right going to the store and 20 houses on your left coming home, how many houses did you count?