Actually, a lot of Gundam is really good with the science, if you first accept the premise that they decided it was a good idea to have giant humanoid robots.

Gundam Seed, for example, has pink explosions in their space battles. Which I thought was twerpy at first, but then I found out that the writers had figured out what sort of fuel things would use (something that actually exists but can't be mass produced yet) and this fuel really would explode pink in a vacuum. Therefore pink space explosions = scientifically accurate. Who'da thunk it?