Basics of Astronomy Outline

993 Words Mar 31st, 2014 4 Pages
SCI/151 Week 1 Assignment

Basics of Astronomy Outline
I. Our place in the universe
A. The modern view of the universe
1. The Sun is a star in our solar system that generates heat and light to our planet, Earth through nuclear fusion.
2. Our Milky Way galaxy is an island of stars in space with hundreds of billions of stars like our Sun.
3. The Big Bang is a theory of when the universe started expanding about 14 billion years ago.
4. The phase “looking out in the universe is looking back in time,” refers to the light from other stars we see at night happened in 1913 because light takes time to travel through space.
B. Where are we in the universe?
1. Earth’s place in the solar system is the third planet nearest to the Sun, a
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2. Some stars seem brighter than others because of the differences in distance.
3. Constellations are a group of stars in a region that forms a pattern in the sky.
4. Polaris is the North Star: with one degree of the north celestial pole.
5. Lunar Phase and cause of an Eclipse
a. The alignment of the Moon and Sun determines the moon phase as the Moon orbits Earth.
b. Eclipse happens when the Sun, Earth, and Moon fall in a straight line.
1. Lunar eclipse-when Earth blocks the Sunlight causing the Earth’s shadow to fall on the Moon.
2. A solar eclipse occurs when the moon blocks the sunlight causing the Moon’s shadow to fall on Earth.
B. Astrology is the science of Astronomy; it is the study of movements and positions of the stars believed to have some influence on human activities.
C. Scientific method and Astronomy
1. Scientific method is a way to ask and answer questions through observations and experiments. a. make an observation b. ask a question c. suggest a hypothesis d. make a prediction e. experiment
2. Most of the Astronomy discoveries were explained using the scientific methods.
D. Aristotle and Astrology
1. A philosopher and student of Plato, who was wrong about gravity and the Earth’s location.
2. We still see Astrology the same way Aristotle believed that the movements and positions of the celestial bodies have an influence in our lives.

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