Advent Calender - H_H

14th

(1) Riddle:

I affect everything. I destroy things, create things, see things die and see things being born. Without me nothing would happen. You cannot see me and I don't see you, however you know I am there and a simple device can tell you of my presence. What am I?

Answer to previous: Thunder and Lightning.

(2) Shout-out to a person with an amazing profile pic:

nightstar717

(3) Fact:

The central court at Wimbledon can hold 14, 897 people.