What does a quarter of the moon and two stars with the pie sign in the middle of them mean?

Why was the invention of the compass so important? Is mars the only planet with two moons? How did scientists confirm that the sun has hydrogen and helium power? What are the differences between the outer planets? Which two organizational patterns would be most appropiate for a speech on the life and achievements of astronaut sally ride'? What is the name of a Muslim astronomer who is believed to have discovered the galaxy of Andromeda in the tenth century? How does our sun compared to other stars and brightness and temperature? When did Apollo 11 leave planet earth for a manned landing on the moon? In the northern hemisperethe sun reaches what equinox on March 20 or 21? How does water vapor turn into water? What is catalespy? Why are the on coastal sides of a mountain often foggy? What term is applied to stars that explode? What day of the week was August 6 1962? Why are rainbows called that? Is a nimbus cloud high or low? How fast does space junk travel in space? If rotation did not occur one side of the earth would always be continually exposed to the? Each peak on the graph represents a sunspot maximum In which years do these maxima occur? What is the main part of the sun?