Satellites as a craftable similar to rockets, that can be placed on a launch pad, only instead of the player hoping in, you launch them into orbit remotely. A monitor of some kind could be linked to satellites to receive various pieces of information.
Different modules could be installed into satellites to achieve various utilities. Some examples could include;
Locator: Satellites can be used to locate biomes, structures, players or fallen asteroids.
Item Transport: Items could be loaded into the satellite on launch and retrieved by orbiting space stations.
Remote Signals: Satellites can be set to periodically beam a Redstone signal from space to a Redstone component, activating it remotely.
Weather Disruptor: An advanced module that allows the satellite to alter the weather on command.
Could be other ideas, but I thought this sounded cool. It may exit this mods scope into Techarium though. Regardless, what do folks think?