Which units can travel interplanetary?

is it only the Transport and the nuke missile?

I read somewhere that the Avengers can do it, but i havent been able to make them do it.

Thanks

All orbital units can, nukes and units fired via unit cannon...

Thanks. Wonder why i did't get the "Special Move" command option when i select the Avengers?

When you have them selected do you left click or right click on the planet you want them to go to? Thanks.

Just give them a regular move order, special move is for the Astraeus to go down to the air layer for example.

Unit cannons..

didn't they disable the solar array's ability to move interplanetary?

Not as far as I know. I forget if they generate power while in transit, though.

It's a good way to move your energy production away from an incoming moon or nuke.

currently every orbital mobile unit ... so everything in the basic orbital launcher and advanced orbital factory ... however only the austreus is currently able to get on to planets ... everything else is on the orbital layer ...