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Entry Ticket: How do you measure Time-Distance in the universe?

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Entry Ticket: How do you measure Time-Distance in the universe?

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Entry Ticket: How do you measure time and distance in a soccer field? 

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Entry Ticket: How do you measure time and distance in a soccer field? 

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What if the aliens who got our radio waves just, you know, rocked out to it?

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What if the aliens who got our radio waves just, you know, rocked out to it?

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Radio broadcasts leave Earth at the speed of light. Scroll away from Earth and hear how far the biggest hits of the past have travelled. The farther away you get, the longer the waves take to travel there—and the older the music you’ll hear.

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How far did human music travel in space?

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How far did human music travel in space?

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How Far Did Human Music Travel in Space?

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Why do we use light instead of sound to measure distance in the universe? 

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Why do we use light instead of sound to measure distance in the universe? 

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What is a light year?

2. What is the nearest large galaxy to us and how far is it?

3. What does a light year measure?

4. What is the  speed of light and what does it mean?

5. What does the following sentence mean: "We always see the Sun as it was about 8.3 minutes ago". Explain.

6. In 2016, NASA's Hubble Space Telescope looked at the farthest galaxy ever seen, called GN-z11. It is 13.4 billion light-years away, so today we can see it as it was 13.4 billion years ago. Why is this important to humanity? Explain.

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What is a light year?

2. What is the nearest large galaxy to us and how far is it?

3. What does a light year measure?

4. What is the  speed of light and what does it mean?

5. What does the following sentence mean: "We always see the Sun as it was about 8.3 minutes ago". Explain. 

6. In 2016, NASA's Hubble Space Telescope looked at the farthest galaxy ever seen, called GN-z11. It is 13.4 billion light-years away, so today we can see it as it was 13.4 billion years ago. Why is this important to humanity? Explain. 