Question

As of summer 2020, Voyager 1 is about 13.8 billion miles from Earth. Express this distance in AU,

using scientific notation, with two significant figures.

Answer 1

1.478 x 10^2 AU

Explanation:

To convert this distance to astronomical units (AU), we can use the fact that 1 AU is approximately equal to 93 million miles.

So, 13.8 billion miles is approximately:

13.8 billion miles / 93 million miles/AU = 147.8 AU

In scientific notation, this distance would be written as: 1.478 x 10^2 AU