Presentation on theme: "Astronomers observe the sky! Astronomy is the study of: the sky & the stars galaxies, cosmology, the solar system (With thanks to Mark Clayson & Mark Ritter)"— Presentation transcript:
Astronomers observe the sky! Astronomy is the study of: the sky & the stars galaxies, cosmology, the solar system (With thanks to Mark Clayson & Mark Ritter)
Visions of the Heavens Marcus AureliusMarcus Aurelius : "He who does not know what the world is does not know where he is, and he who does not know for what purpose the world exists, does not know who he is, nor what the world is."
a little math… the numbers we use are astronomical, so… you must understand scientific notation! you should know it already; it just makes enormous and infinitesimal numbers easier to deal with
solar system: the sun, planet family, all the other little stuff planets: small, non- luminous bodies sun: self-luminous ball of hot gas that generates its own energy astronomical unit (AU): average distance between sun and earth (93 million miles)
Solar System Montage by Voyager: planets & Jupiter’s Galilean moons
light-year (ly): the distance light travels in a year; almost 10 13 km galaxy: great cloud of gas, stars, dust bound together by gravity Milky Way: the galaxy we live in
How Matter is Organized Organization of the Universe: –Superclusters of galaxies Clusters of galaxies –Galaxies Clusters of stars (globular, open in spiral arms) Clouds/Nebulae (stars coming or going) –Stellar systems Stars (single, binary,...) Planets (terrestrial, Jovian) –Moons Minor objects (comets, asteroids,...)
The Lives & Classes of Stars: The Hertzsprung-Russell Diagram The Sun’s Life Story
A Very Brief History of Natural Science Natural Philosophy: study of unanswered questions about nature. The search for understanding through study of the physical world Scientists look at the world with curiosity –Curiosity makes us ask questions about the world around us: Why does the sun shine? What makes the sky blue? How old is the earth? How were the planets formed? Why do things fall? What are things made of? Scientists make observations, do experiments, create models/theories to answer questions, in an iterative process… –GOAL: to obtain a compelling explanation describing observed phenomena, which makes accurate predictions, and leads to a better understanding of the universe. Scientists try to understand the multitude of nature’s attributes as resulting from the action of a relatively small number of elemental (basic) things and forces acting in an infinite variety of combinations. Physics (the basis for ASTRONOMY) is the most basic of all sciences; it’s about the nature of such basic things as motion, forces, energy, heat, sound, light, and atoms.
Science and Theology Search for order and meaning takes different forms… Science is concerned with discovering and understanding natural phenomena –The domain of science is natural order Theology is concerned with the source, purpose, and meaning of everything –The domain of theology is nature’s purpose Science and theology complement, rather than contradict, each other. Lack of understanding about either science or theology can make people feel they must choose one or the other, but a deeper, more complete understanding of each enables us to embrace them both without contradiction. God is the author of both creation and scripture! “For since the creation of the world God’s invisible qualities - his eternal power and divine nature - have been clearly seen, being understood from what has been made, so that men are without excuse.” - Romans 1:20 “The heavens declare the glory of God; the skies proclaim the work of his hands…” - Psalm 19:1
Science and Theology can enlighten and inform each other as we seek to know ultimate TRUTH “For now we see through a glass, darkly, but then we shall see face to face; now I know in part; but then shall I know even as also I am known.” I Corinthians 13:12 THEOLOGYTHEOLOGY SCIENCESCIENCE
SCIENCE IS THE TOOL WE USE TO INVESTIGATE GOD’S CREATION! FAITH INTEGRATION
The Scientific Method I Thessalonians 5:21 – “Test everything…Hold onto the good.” Psalm 34:8 – “Taste and see that the Lord is good.”