You're been teleported through a wormhole to a galaxy far far away, on an unknown planet. Thankfully it is host to a Type III civilization, so you can borrow their telescope consisting of 2.5 billion, 1500-meter satellite dishes arranged in a square array across their Milky Way-like galaxy (with a diameter of 25 kpc 81, 500 Ly) If we measure light at the peak wavelength with the alien telescope, what is the best angular resolution it can achieve? To determine its baseline, L, the typical distance between individual satellites, you should refer to the array's and alien galaxy's dimensions. What is the angular resolution of just one of its satellite dishes? Provide your answers in units of nano-arcseconds