Unit 4 Astronomy: the science of the stars Words and expressions What science subjects do you know? physics geology geography biochemistry astronomy What is Astronomy? Astronomy is the scientific study of the universe and the heaven bodies (such as the sun, the moon, and stars), gas, and dust within it. NGC7742星云 哈 勃 眼 中 的 宇 宙 The Solar System In our solar system eight planets circle around the sun. What are the names of the eight planets that circle our sun? 金星 Venus 地球 水星 Uranus Earth 火星 Mars 天王星 Neptune 海王星 Saturn 木星 Mercury 土星 Jupiter How to remember the order of the eight planets around the sun? My Very Earnest Mother Just Served UN a Pizza Mercury Venus Saturn Earth Uranus Mars Jupiter Neptune Let’s appreciate some beautiful pictures of the solar system. Total lunar eclipse (月全食） Total solar eclipse (日全食) Meteor rain（流星雨） Comet (彗星) What interests you in astronomy? Do you know any questions that astronomers are interested in? How was the universe formed? How did life begin on Earth? Brainstorming Do you know each religion or culture has its own ideas about the origin of the universe or life? Chinese Legends (传说) ?Pangu separates the sky from the earth. ?His whole body then turns into all kinds of things in the universe. The development of the life breath voice left eye right eye blood veins winds and clouds thunder the sun the moon the rivers the roads Nuwa makes human beings Religious Beliefs According to Bible (圣经), God created the world and the first man, Adam (亚当) and the first woman, Eve (夏娃). God created the world in seven days. Day 1: God spoke and separated light from darkness, creating Day and Night. Day 2: God spoke and separated the water creating sky and ocean. Day 3: God spoke and created dry land. Day 4: God spoke and created the sun, the moon and stars. Day 5: God spoke and created living things in the air and sea. Day 6: God spoke and created the land animals and the first man. Day 7: God rested and called this day Holy. Scientific Theories Famous scientists such as Newton, Einstein and Stephen Hawking had their own theory about the origin of the universe. The universe began from the Big Bang. Life first began in the sea on the earth. Life was brought to the earth by ET from outer space. Life came from a comet which hit the earth. Study of the groups of life (种类/物种) Look at the pictures and tell the groups. 1. insects 2. plants 3. reptiles (爬行类) 4.