On the 1 to 10 billion scale, about how far is it to the nearest stars besides the Sun?

Question

1. 4 km

2. 400 km

3. 1000 km

4. 4400 km

5. 10000 km

It cannot be 1 and 2.

Answer 1

1 light year = 9.46 e12 km

Distance to Proxima Centauri (nearest star besides the Sun): 4.3 light years = 4.3 x 9.46 e12 = 4.07 e13 km

10 billion = 1 e10

4.07 e13 / 1 e10 = 4.07 e3 = 4070 km

Nearest answer is 4, or 4400 km.

Answer 2

The distance to the Sun is 1 AU, which is 150x10^6 km.  Dividing by 10 billion gives 0.015 km.

Alpha Centauri is 272,47 AU from the Sun, so its distance on the reduced scale is 272,147 x 0.015, or 4082 km.

The closest number in your list is 4400 km, which is answer 4.

Answer 3

The nearest star to us besides our sun is..Proxima Centauri.

It is located approximately 4.3 light years away.

That's about 6 trillion miles multiplyed by 4.3

Answer 4

It's #3. 1000 km.

On a 1:1E+10 scale, the sun is 50 feet from Earth, and Alpha Centauri is about 600 miles from Earth, or 1000 km.