Do bombardment counts for "invading planets"?
Yes, the rules (pg. 12) refer to the term &quot;invasion&quot; as:

Hostile Landing (also called an &quot;Invasion&quot;): A player lands units on a planet containing one or more of an enemy player's Ground Force units. This will result in an Invasion Combat during the Invasion Combat step.
If a player lands units on a planet that is controlled by an opponent, but does not contain any enemy Ground Forces, the planet falls without resistance.

There are only three types of landings, Friendly, Neutral, or Hostile (&quot;Invasion&quot;).