So i am creating a nuke and i already made the nuke itself but I want to make an explosive wave that expands outwards. I have no idea how to create a part that expands. Until I figure this out im just gonna go with this:

nuke = script.Parent
cooldown = 10
canExplode = true

function boom(custom)
	timer = game.ServerStorage.beep
	timer:play()
	wait(1)
	timer:play()
	wait(1)
	timer:play()
	wait(1)
	pew = Instance.new("Explosion")
	pew.Parent = nuke
	pew.Position = nuke.Position
	pew.BlastRadius = 100
	pew.ExplosionType = "NoCraters"
end

nuke.Parent.Button.ClickDetector.MouseClick:connect(boom)