Fiction:Ackoli

the ackoli are a scientific civilisation, being very powerful. they have some colonies on andromeda and orbiting dwarf galaxies, and are aproaching type 3. they are diplomatic and make good allies, but you shouldn't attack them, because they still have a powerful military. there spacecraft work via shooting out compressed carbon dioxide, reaching speeds of up to 0.25 C, but they have reached up to 10 C.