New Discoveries10A: Cosmic Dawn 우주의 새벽High in the Adnes Mountains, an array of telescopes larger than ... in the 17th century. ... many cities reveals the secrets of the universe.
Beyond Earth2A: Cosmic Dawn 우주의 새벽An Eye on the Heavens 하늘을 지켜보는 눈Telescopes have come a long way since ... Much of the universe is even colder than this. ... the first ones were invented early in the 17th century.
To capture images of cold objects, astronomers use radio telescopes. ... Telescopes have come a long way since the first ones were invented early in the 17th century. ... Much of the universe is even colder than this.