A TELESCOPE is a type of a light bucket.it collects light from the objects in space , using either a lens or mirror.The main mirror reflects the light to a smaller one,which brings the light to a focus where an image of the object is formed The Italian scientist Galileo Galilei made the first telescope out of a couple of spectacle lenses in 1609.After Galileo, an English scientist ,Sir Isaac Newton invents a reflecting telescope that uses two mirrors instead of lenses in 1668. Now a days many types of telescope are working.Some are - Refracting telescope -It uses a large lens to refract or bend the light to form an image of a distant object. Reflecting telescope -It uses a large curved mirror to pick up the faint light from distant stars. Radio telescope - It captures invisible radio waves given out