## sylinan 2 years ago Saturn is approximately 1.5 billion kilometers from the sun. What is this distance in AU? 0.1 AU 10 AU 100 AU 1,000 AU

1. JamesJ

Well, ... how far is an AU, astronomical unit?

2. sylinan

2.23795229 × 1022 m2

3. JamesJ

No. an AU is a distance. It is the mean distance of the earth from the sun. It is approximately 1 AU = 150 million kms Now, knowing that how much is 1.5 billion kms?

4. sylinan

@JamesJ 0.1 AU?

5. JamesJ

Ok if 1 AU = 150 million kms then 0.1 AU = 15 million kms Does that sound right to you? Also, could it possibly be the case that Saturn is closer to the sun than the earth?!

6. sylinan

@JamesJ ohh okay so it would be 100AU then?

7. JamesJ

1 AU = 150 million kms. How much is 100 AU?

8. sylinan

@JamesJ 15000000?

9. JamesJ

1 AU = 150 million = 150,000,000 10 AU = 1,500,000,000 100 AU = 15,000,000,000 So what's the right answer?

10. sylinan

@JamesJ 100 AU

11. JamesJ

Wait no. The question is this: Saturn is at a distance approximately of 1.5 billion kms from the Sun. How many AU is that?

12. sylinan

what is kms?

13. sylinan

@JamesJ what is kms?

14. JamesJ

kilometers! 1 km = 1000 meters

15. sylinan

10 AU?

16. JamesJ

The earth is about 150,000,000 kilometers from the sun, or 150,000,000 km this is called 1 AU, because it's convenient. Yes, Saturn is a distance of 10 AU from the sun. Hence how many more times is Saturn distant from the sun than the earth?

17. sylinan

15?

18. JamesJ

The Earth is a distance 1 AU from the Sun Saturn is a distance of 10 AU from the Sun Hence Saturn is 10 times further away from the Sun than the Earth.

19. JamesJ

Make sense?

20. JamesJ

This works in any units of distance of course: Earth-Sun: 150,000,000 kms Saturn-Sun: 1,500,000,000 kms ... which is 10 times more

21. sylinan

@JamesJ ohhh okay i see now