What do we mean when we talk about the Milky Way in our sky?
1.the spiral-shaped galaxy in which we live
2.the patchy band of light that outlines the plane of the Milky Way Galaxy as seen from Earth
3.the bright stars of the constellations that lie along the ecliptic in our sky
4.the whitish patch of light we see when we look toward the center of the Milky Way Galaxy