![kerbal space program free return duna kerbal space program free return duna](https://i.ytimg.com/vi/BpTj-aBYWPQ/maxresdefault.jpg)
move a landed probe to another nearby location or to overfly a particular location with a craft in orbit. In modern KSP versions you can also get contracts requiring you to e.g. Also note that, even if you don't have enough batteries to transmit the data all at once, you can turn off the "require complete" option on your antenna and still complete the contract even if your batteries run out of charge during transmission.) I like to stick a thermometer on all my commsats in career mode just for this reason. (The thermometer works nicely for this, being the lightest and cheapest science module and requiring the least amount of electric charge to transmit. Even if you've already done the experiment before in the same biome and thus receive 0 science points from redoing it, it'll still complete the contract. In particular, as long as you have a working probe with an antenna and at least one reusable science experiment in orbit around and/or landed on the body, you can complete these contracts just by accepting them, switching to the probe, running the experiment and transmitting the data. "science from space around " or "science from the surface of " that the game will start giving you at random as soon as you enter a new body's SOI.
![kerbal space program free return duna kerbal space program free return duna](http://3.bp.blogspot.com/-YAdsfYQm8Uc/UGDa56HWlnI/AAAAAAAABpE/R0E0A0Vzxjs/s1600/screenshot21.png)
#Kerbal space program free return duna upgrade
Technically, there's no need to go to any other planets in career mode if you don't want to - it's possible to max out the tech tree and upgrade all facilities just by sciencing the heck out of Kerbin and its moons and grinding contracts for those.