target of 'downloading'

reason why you can 'download'

Borg Outpost
Outpost
Shields: 48
Seed one at any mission with no affiliation icons OR build at such a mission (or at an assimilated planet) where you have a Borg ENGINEER. Transwarp Network Gateway.

Construct Starship

Transwarp Hub
Outpost
Shields: 68
Seeds or plays at any nebula. Once each turn, your ship may move from here to any Transwarp Network Gateway, or vice versa.

Construct Starship