Question

How many zero are need to write the diameter of the Milky Way Galaxy in standard notation?

Answer 1

There are close to two hundred billion (200,000,000,000) stars in the Milky Way Galaxy.

Answer 2

21 zero are need to write the diameter of the Milky Way Galaxy in standard notation

The Milky Way's diameter in standard notation is
`\(1.54 * 10^(21)\)` meters. To express this number without any zeroes in standard notation:

`\[1.54 * 10^(21) = 154,000,000,000,000,000,000 \text{ meters}\]`

Therefore, the answer is 21.