One of the ways that scientists determine the distance between Earth and other objects in space is to send light waves toward an object and measure how long it takes for the waves to bounce back. If a scientist sends light waves to four different objects in space, which of the following will take the longest to bounce the wave back to Earth? a star in the Milky Way Galaxy

a star in the Andromeda Galaxy

a planet in Earth's Solar System

a planet in another star system within the Milky Way Galaxy