# Question aa507

Feb 16, 2017

2.708 xx 10^(-58)% of the Universe.

#### Explanation:

If we consider the estimated size of the observable universe, which is said to have a volume of about (according to Wikipedia)

$4 \cdot {10}^{71} \text{km"^3" }$ (cubic kilometers)

and the fact that the Earth has a volume of

$1.08321 \cdot {10}^{12} {\text{km}}^{3}$

then the percentage by volume the Earth occupies of this is:

(1.08321* 10^12)/(4 * 10^71) xx 100% =2.708 * 10^(-58)%#