Sky
    The region of the atmosphere and outer space seen from the earth.When you look at the sky without any telescope or binoculars or any other modern instrument, you see basically the same things the ancient astronomers saw. During the day you see the sun and sometimes even a faint moon.During a clear night you see the stars and usually the moon. If you watch the sky often enough, you can get to recognize groups of stars called constellations. You may even notice a star that seems to be in different positions from night to night: it is really a planet, one of the “wandering stars” of the ancients.