A few highlights:

• There is a radio station in certain areas (probably the main cities)

• No ground vehicles

• Fully scanning/researching a planet nets money

• 10% of planets have life

• Stolen ships are fully upgradable, but require registration which costs money

• Both in-depth ship building and outpost building are for late game; ship upgrades can be done any time, but the in-depth builder is much more expensive

• The inside of your ship is customizable and reflects the outside/modules you use