When the sun earth and moon are in a line does the pull of gravity upon the earth become stronger or weaker?

Why do scientists believe mars has all three types of rock? How does the elliptical orbit produce the seasons and year? What word or words is tension like? Variance in the orbit of a planet from its predicted path is? Is there ice on Jupiter? How much is moon dust worth price per oz or lbs i have about a half lb? How do constellations affect seasons? What is the force of gravity on the surface of Saturn? What incident in a star's life sets off the very quick chain of events that leads to a supernova explosion? What is the maximum weight that a rocket can handle? What can you infer from a star's luminosity class? Why is it important the jelly lens changes shape? Does the red moon come every 10 years? Is A star a sun? What kind of force is it when rockets escape from gravity? What year was the Apollo 17 mission? How many people landed on the moon since 1969? Where is half of the sun faceing away from the sun in? How did detectives nab the suspect based on the pod evidence? What is the orbital path of an object around another?