[abalone]

> We don't use fibre optics on earth rather than lasers because of some specific limitation of the earth's surface being in orbit would avoid.

That's incorrect. Lasers can suffer from atmospheric interference and fogging on earth.

Here is a post from NASA explaining why they like laser communications better than RF in space.[1]

[1] https://solc.gsfc.nasa.gov/modules/kidszone7/mainMenu_textOn...