Answer:
Come up and let us go. Go down and here we stay
Different lights do make me strange, thus into different sizes I will change.
Five men were eating apples, A finished before B, but behind C. D finished before E, but behind B. What was the finishing order?
You can read it both ways, I wearΝΎ One way it's a number, reversed a snare.
Sharp and long, flag of the world. What is it?
Iβm grown from darkness but shine with a pale light. Very round I am and always a lady's delight.