Annihilasers cannot destroy orbiting planets, as it cannot rotate fast enough to catch the other planet's orbit. I think they should keep this in. It gives another reason to use hallies too.
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depends. maybe he had a closer in orbit and that planet was going faster. too fast for it to eventually catch.
It also seems like the metal-planet can't fire at planets right next to it(or was not working at some point atleast). There was minimal rotation during this stance between the planets.
It looked like the revolution of the other planet was the same as the rotation of the metal planet, to clarify.