**seconds**?

**Details and assumptions**

- The mass of the Sun is $2 \times 10^{30}~\mbox{kg}$.
- The mass of the Earth is $6 \times 10^{24}~\mbox{kg}$.
- Newton's constant is $6.67 \times 10^{-11}~\mbox{Nm}^2/\mbox{kg}^2$.
- The Earth is $149,600,000~\mbox{km}$ from the Sun.
- You may treat the Earth and Sun as point masses.