I have just posted the v0.3.0 update for My Starship.
This update adds one new planet type graphic (the water world). But more importantly, it adds a new Ship Contact screen for when your ship comes into contact with another one on the map.
Right now, it just lets you buy and sell goods with other ships. Usually ships are not as keen as doing business with you as other planets are, since they generally need their cargo for their own missions. However, another new change is that if you run out of fuel in space, other ships may pass by who are able to sell fuel to you (at inflated prices, of course).
Eventually, this ship contact screen is where battles, piracy, and other ship interactions will take place.
In addition, the global price values of all goods will now slowly rise and fall over time, which should change the profitability of certain goods over the long run.
Next I plan on adding more resources and factories to the game. Certain planets will have factories that produce different resources, and will require the input resources via trade. This should add further profitability to the buying/selling mechanic of the game.
I also plan on adding the ability (soon) to send out a collection expedition and harvest raw materials from uninhabited planets.