Less than 1% of galaxy is inhabited: Only 2/3 of the systems in a galaxy are in safe livable galactic zones (not in the galactic core: too much cosmic radiation there, not in nebulae: waaay to hot there, not in systems with giant stars: too much solar radiation, ect...) Out of the remaining 1/3 of the galaxy by our estimates 1 in 500 to 1500 of systems have an m class planet capable of supporting life. Thats 200,000,000 to 600,000,000 possible planets capable of supporting life out of several TRILLION (thats already at 0.2%-0.6% of ALL galactic star systems(systems in our galaxy)) let alone area of that galaxy covered by life forms. On earth life forms inhabit 0.000009% to 2% of the entire planet's area (all atmosphere included) Now to blanket all areas of the universe at once means you need to cover that entire area with what ever SUB ATOMIC particles the halo array uses. SUB atomic particles are extremely small (not that much energy to create) but the amount you need to cover 1 CUBIC METER is already something like 1,000 TRILLION x10^40 Thats 1,000 trillion with 40 extra zeros and thats just one cubic [u][i][b]METER[/b][/i][/u] that bein said; heres how BIG the universe is: Earth is to the milky way (our galaxy) what ONE ATOM is to EARTH. The milky way is to the observable universe what one electron is to the size of the earth. The observable universe is to the universe what one atom is to our solar system. So its so ridiculously large we literally cant comprehend it or build a computer powerful enough to compute its size+ everything in it on a true 1 to 1 life sized scale (the entire universe not just the observable) The observable universe is something like 36x BILLION light years in every direction from our solar system out; An to the actual size of the universe the observable universe's 72 billion light year diameter is only what a SINGLE ATOM represents within the space of our ENTIRE SOLAR SYSTEM. So yea if u wanted to blanket ALL the universe with sub atomic particles YOU NEED more than HALF THE ENERGY IN THE [u][i][b]ENTIRE UNIVERSE[/b][/i][/u] to do it.