Languages homework help. Hi, need to submit a 250 words essay on the topic According to Carl Segan Why we are Star Stuff.Our second or third generation sun and the solar system around it are the result of such condensation. In essence all matter on planet earth is condensed matter from the emissions of stars. We humans have been formed from this matter. The rocky matter on which the earth is made up of, the iron present as haemoglobin in our blood,the calcium present in our teeth and bones, the carbon that makes up our genetic matter have all come from the early emissions from the first generation stars. This is the basis of Carl Sagans argument that we are Star Stuff. He further connects this basis of humans being Star Stuff as the cause for the underlying human need to seek and understand this connection with the universe, which neither astrology nor astronomy can satisfy.