There are three types of developmental programs, Orbital, Extra-Orbital, and Military.
Orbital Development - These programs are single efforts and most have a shield costs similair to modern era wonders.
Extra-Orbital - These programs are for missions to the Moon or other Planets. They have many more issues to deal with then standard missions in Earth orbit. Each of these problems will have its own development program.
Military - These programs are very advanced and require much stouter materials and technology then just exploration. The purpose is to protect the bounties of space from others and actively destroy their craft and satellites.
Orbital Programs
Small Rockets - Requires Launch Facility - These rockets will allow for short one-man missions or small satellites.
Large Rockets - Requires Launch Facility and Small Rockets - These rockets will boost most satellites, multi-man missions, and is the base for ICBMs(different topic).
Shuttle - Requires 'Synthetic Fibers', 'Robotics', Space Agency, Launch Facility and Large Rockets - Allows you to build reuseable space craft which are great for servicing and installing satellites.
Advanced Satellites - Requires Space Agency, Launch Facility, 'Robotics', 'Synthetic Fibers', and 'Satellites' - Allows you to make the next generation of satellites including projects like the Hubble Space Telescope and modern spy satellites.
Interplanetary Probes - Requires Space Agency, Launch Facility, Large Rockets, 'Satellites', and 'Computers' - Allows you to build basic planetary probes, which will allow you to conduct probe missions to other planets and moons.
Advanced Interplanetary Probes - Requires Space AGency, Launch Facility, Interplanetary Probes, 'Robotics', and 'Synthetic Fibers' - Allows you to build fully automated research probes, a lot like the Mars Rover.
Basic Spacestation - Requires Space Agency, Launch Facility, Large Rockets, 'Satellites', and 'Computers' - Allows you to build basic space station parts. Think of Mir.
Advanced Spacestation: Requires Basic Spacestation. Allows for construction of a comprehensive, multi-purpose space station.
A) Power - The power needs of a modern space station are much greater then the smaller, earlier version.
B) Science Pods - These pods are state-of-the art and desinged to be modular.
C) Life Support - The life support needs of asronauts on a station are much different then shorter missions.
D) Docking - Air and fuel exchange are now very important for long-duration orbit.
Moon Delivery System: Requires Space Agency, Launch Facility, 'Computers', and 'Synthetic Fibers'. Allows for construction of a system that will land men on the moon.
A) Giant Rockets - Required to launch the very large Delivery system that is required to reach the moon.
B) Lunar Lander - Required to land on the moon and eventually take back off.
C) Life Support - Life support needs are different for a trip to the moon then orbital flights.
Extra-Orbital Systems
Mars Delivery System: Requires successfull Moon Mission, 'Superconductor', 'Genetics', and Advanced Launch Facility. Allows for construction of a system that will land men on Mars and bring them back. Programs for landing on the Mars moons can be researched once the Mars mission is successful.
A) Orbital Construction - The massive size of the system will prevent it from being launched from the ground. Parts will be shipped up and assembled in orbit.
B) Advanced Propulstion - The distances involved make super-efficient and powerful engines a necessary reality.
C) Long Term Life Support - The mission time, estimated four years each way, will make it impossible to pack the necessary supplies.
D) Mars Lander - Mars has an atmosphere, unlike the moon. A much larger and more powerful lander must be used so the astronauts can lift off.
E) Refeuling Satellites - To save the feul load needed initially, several refeulling probes will be sent to Mars orbit. Once the Mars craft arrives, it will refeul and be prepared for the trip home.
F) Power - The nuclear reactors used to power the long-distance probes are not sufficient enough to power the massive Mars ship. Because of the increases size, much more design will have to be utilized for safe use.
G) Radiation Shielding - Long distance probes did not have to support life. The Mars ship will have to carry men beyond the protection of the Earth's Van Allen belt and into much greater radiation.
Venus Delivery System: Requires successful mission to Mars. Allows for construction of a system that will land men on Venus and bring them home. Programs for landing on the Venus moons can be researched once the Venus mission is successful.
A) Venus Lander - Venuses hot, acidic atmosphere will require a whole new set of materials and paradigms.
B) Radiation Shielding - The closer you get to the sun, the more heat and radiation that will bombard the ship.
Mercury Delivery System: Requires successful mission to Mars. Allows for construction of a system that will land men on Mercury and bring them home.
A) Mercury Lander - Mercury's heat backed surface is not very friendly to visitors.
B) Radiation Shielding - Mercury's relative proximity to the sun presents huge dangers for astronauts.
C) Advanced Propulsion - Mercury is close enough to the sun that escaping the sun's gravity becomes a legitimate concern.
Saturn Delivery System: Requires successful mission to Mars. Allows construction of a system that will take men to the rings and atmoshpere of Saturn. Programs for landing on the Saturn moons can be researched once the Saturn mission is successful.
A) Advanced Power - The farther you get from the sun the less radiation shielding you need. However, that same radiation often provides power, so long distance treks require advancements in renewable and sustainable power.
B) Advanced Life Support - This trek is a massive step in life support from even the Mars mission.
C) Advanced Propulsion - The increase in module size and distances involve require a new generation of high-power engines.
D) Advanced Construction - The stresses of Saturn's atmosphere will tear many spacecraft to pieces.
Jupiter Delivery System: Requires successful mission to Saturn. Allows for construction of a system that will take men into Juipter's atmoshpere and back home again. Programs for landing on the Jovian moons can be researched once the Jupiter mission is successful.
A) Advanced Life Support - This trek extends many more AU past the Saturn mission.
B) Advanced Propulsion - Besides distance, the gravitational stress between Jupiter and its sixteen moons force starships to have manueverability as well as distance capability.
C) Advanced Construction - Once again gravitational stress will challenge engineers who want to keep the ship as light as possible.
Uranus Delivery System: Requires successful mission to Jupiter. Allows for construction of a system that will take men into Uranus's atmosphere and back home. Programs for landing on the Uranus moons can be researched once the Uranus mission is successful.
A) Advanced Life Support - This trek extends many more AU past the Jupiter mission.
B) Advanced Propulsion - It take a lot of fuel to propel a multi-ton spacecraft this far from Earth. Engineers would like to reduce that fuel need.
Neptune Delivery System: Requires successful mission to Uranus. Allows for construction of a system that will take men onto Neptune's surface and back off. Programs for landing on the Neptunian moons can be researched once the Neptune mission is successful.
A) Advanced Life Support - This trek extends many more AU past the Uranus mission.
B) Advanced Propulsion - It take a lot of fuel to propel a multi-ton spacecraft this far from Earth. Engineers would like to reduce that fuel need.
C) Neptune Lander - Landing technology is pretty standard by this point, but each system must be custom tailored for the planet it is landing on.
Pluto Delivery System: Requires successful mission to Neptune. Allows for construction of a system that will take men onto Neptune's surface and back off.
A) Advanced Life Support - This mission takes you to the edge of solar system.
B) Advance Propulsion - Once again, feul needs are so great that even advanced engines have trouble.
C) Advanced Power - The reactors developed for the Saturn mission are not efficient enough for this voyage.
D) Pluto Lander - By this point the lander systems are very sophisticated.
Planet Colony Base Project: Requires successful mission to planet that base will be built on. Once the development marked * is finished, you can then research the System necessary for each unique planet or satellite of the planet. You also must have landed on that planet with men. I will not mention programs for moons, becaue their are a plethora(Saturn has 5, Jupiter has 16, etc.)
*Advanced Life Support - Even compared to the multi-year planet expeditions, the life support systems of a planetary base requires massive improvements and self-sustainability.
*Advanced Construction - These facilities will be much larger then any space craft built before.
*Advanced Propulsion - Due to their size, these facilities will have to be flown to their destination in many pieces. Even then the size of the modules will require more powerful engines then currently exist.
Moon Base - The Moon's relative proxmity to Earth and the existence of orbital support facilities make this mission much easier. It is still no walk in the park, but will provide many lessons needed to go further from Earth. Required for any other bases.
Mars Base - This is the second easiest base to establish. It is near to the Earth and has a relatively moderate surface conditions. It also has less gravity to overcome.
Mercury Base - The shielding needs of a planetary base are much greater then even those of a visiting spacecraft. That and problems with exposure to sun flares and solar gravitation.
Venus Base - The surface of Venus is very harsh and hot. Environmental backlash is considerable and forces us to desing systems for much longer periods without resupply.
Saturn Station - Because Saturn is a gas giant, landing on the surface would be impossible. Instead we can launch and maintain a large support and research facility at various altitudes. This station will help repair and refeul ships on their way further out.
Jupiter Station - LIke Saturn, Jupieter is a gas giant. It is also plagued by harsh climatic conditions and a lot more gravity.
Uranus Station - Like Saturn and Jupiter, Uranus is a gas giant. It is slightly milder, but much further from Earth.
Neptune Base - The long distances involved, especially from the sun force a heavier reliance on non-solar energy.
Pluto Base - This is the farthest you will go from Earth before leaving the solar system. Once you have mastered the technology of sustaining a facility this far out, going to foreign star systems can now be considered a researchable goal.