Is Albert Einstein on a dollar bill?

When two objects of unequal mass orbit each other where is the center of mass? Can you see the big dipper from Caribbean? What is the eyes spelled backwards? Do all inner planets have moons? Can life continue in the aquarium indefinitely as long as the sun shines regularly on it? Why do people glare? How much is a 2006 twenty dollar with a star next to serial number worth? What is the definition of prograde motion? What do you call a scientist who studies the celestial bodies? Why is the gravitational force attractive? Why is plasma the state of matter that is found in stars but is not common on earth? What are the 3 main things that you need to live? What happens to the hydrogen in the core of the sun? What type of microscope produce a flat two dimensional image? What are the characteristics of Aristotle's picture of heaven? When was the first canadian satellite invented? What is the function of a solar geyser? Compared to the diameter density and mass of other stars the sun is? What buildings can you see from the moon? One orbit of the moon begins with a new moon and ends with a new moon. What is the phase of the moon when its halfway around its orbit?