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Describe what is meant by a light year and why it is important
What is a light year, and how do we use our knowledge of a light year?
Subject:
Astronomy
Topic:
General Astronomy
Posting ID:
43537
OTA ID:
103139
What is the astronomical unit (AU), and how is it useful for Astronomers. How are the distances measured in our solar system. What is the relationship between the light year and the AU?
Subject:
Astronomy
Topic:
General Astronomy
Posting ID:
43538
OTA ID:
103139
How do we know the earth is spherical? Where is the ecliptic and what constellations are along there?
Subject:
Astronomy
Topic:
General Astronomy
Posting ID:
48345
OTA ID:
103846
Discussion questions - eclipses, lunar phase changes, Newton
1. Explain what causes a lunar eclipse. Explain what causes a solar eclipse. Include a diagram. Why don't eclipses occur every month? 2. Describe the phase changes of the Earth that one would see if viewed from the Moon. 3. It is said that Newton unified Earth and the Universe. Explain.
Subject:
Astronomy
Topic:
General Astronomy
Posting ID:
48440
OTA ID:
102509
h. Explain what causes weightlessness. j. Explain the effects we see in the sky when the earth revolves. l. How do we know the earth is spherical? o. Where is the ecliptic and what constellations are along there? Please answer only if you know something about Astronomy. Thanks.
Subject:
Astronomy
Topic:
General Astronomy
Posting ID:
48441
OTA ID:
103139
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