This mod adds rockets on which you can fly to other planets, and at the moment in this version you can craft and fly to Mars or land on the fragments of the  asteroid, and on these planets you can build your house, but before the flight it is recommended to craft and put on a spacesuit, as the climate on these planets will be different from the usual world in the Minecraft game.

How to install a mod for Minecraft 1.7.10:

• Install Minecraft Forge
• Download the archive with the mod
• Open the downloaded archive and copy 3 files GalacticraftCore BETA.jar , Galacticraft Planets.jar , MicdoodleCore BETA.jar to the folder and transfer to the .minecraft/mods folder