why does the moon orbit the earth?
A dog's prostate gland is located on the shaft of the penis.During sex where ejaculation occurs,the prostate swells inside the vagina,preventing withdrawal until the swelling subsides.This ensures that the sperm have an opportunity to reach the egg before another male can attempt fertilization. You are not sick for wondering,like the other responding people said.This is a subject studied by veterinary students,breeders,and individuals involved in animal husbandry.I am glad you had the courage to ask. I hope this answers your question well enough.
a) Galaxies that are closer move more slowly. b) Galaxies that are twice as far away move at double the speed. Hubble Constant: Ho- the rate at which the expansion velocity of the universe changes with distance. It's measured in km s-1 megaparsec-1. Space is expading! and the galaxies (althogh they have motion of their own) are 'riding' on this expanding space. Imagine a square black piece of rubber sheet and you put white dots on it to repesent the galaxies. If you could streach that sheet from it four sides simultaneously, then the dots on the outside edge would appear to move the most while those in the centre move the least. Sorry I have one min of internet time left!!
