It's tricky to define a precise "edge" to the Milky Way. It's more like a hazy, sprawling disk of stars, gas, and dust, with no sharp boundary. However, we can talk about the distance to the outer edge of the galactic disk where the density of stars and gas significantly drops off.

Here's a breakdown:

* Estimated diameter of the Milky Way: 100,000 light-years.

* Earth's distance from the galactic center: Roughly 26,000 light-years.

Therefore, the distance to the outer edge of the Milky Way from Earth would be approximately:

* 50,000 light-years (half the diameter) + 26,000 light-years (Earth's distance from the center) = 76,000 light-years

Now, to convert light-years to meters:

* 1 light-year = 9.461 x 10^15 meters

* 76,000 light-years = 7.19 x 10^20 meters

So, the outer edge of the Milky Way's galactic disk is roughly 7.19 x 10^20 meters from Earth.

Important note: This is a rough estimate. Astronomers are still refining our understanding of the Milky Way's structure and size.