What is photoperiodisom?

Earth have 2 moon? How many times did John Glenn orbit the earth? Does Objects that are falling toward Earth move faster and faster? What is Hades best quality? What is the belief of eclipse? Who orbited the moon during the first Apolllo flight? What is a kenning for star? Is Albert Einstein an explorer? Who were America competing against in the moon landing? Does color red attract thunder? What is the name of the space shuttle to land on moon? How long does it take sound to travel 100m? Is Percus the son of Poseidon or Zeus? How did Rhea fool Cronus when Zeus was born? How does a pixel relate to a map making? Why does a fountain pen starts leaking at higher altitudes? Who proposed Nebular hypothesis? Why are astronauts taller in space than earth? Why does the Mariner feel like a ghost? What is the adjective form of space?