Why doesn't NASA design new versions of the space shuttle?
With advancement in technology, why doesn't NASA plan to build a cheaper to operate space shuttle?
Was NASA planning on building more shuttles after 1985? Why doesn't NASA build a spaceship and leave it docked in the ISS to be used for exploration missions? Why was NASA not able to build reusable rockets like Falcon 9 of SpaceX? Why is it that after more than 50 years of manned space flight, travel to low earth orbit is still so rare and expensive? What do you think about ISRO working on space shuttle instead of building one like Soyuz when space shuttle is clearly expensive and not safe? Can space shuttle be used for commercial travel? I mean between countries? Does NASA have plans for a larger successor to the ISS? Why is NASA and SpaceX's agreement no funds transferrable? How did ISRO conduct a Mars mission with a much lower budget than NASA? Is the antigravity electric lifter better and cheaper than traditional rockets for getting to space? Why don't space organizations try to send spacecraft to planets like Neptune or Pluto? Why don't space shuttles digitize the control panel to save weight and space? How much money did it cost to move the International Space Station to another orbit on 3 Oct 2012 to avoid space debris? Could a Space Shuttle fly to and around the moon and back? Why not? Will NASA have a viable warp drive for interstellar travel within the next two centuries? Do we have plans to build generational ships for deep space travel? What should NASA's budget be? Can a Space Shuttle be used as a civil airliner? (cabin altitude is zero) With all the things we are sending into space, don't we run the risk of making the earth smaller? Is space exploration a waste of money? Does Nasa have any plans or concepts of a manned Martian lander? What do people at NASA think about SpaceX? What future propulsion can be used for interstellar spacecrafts? Why don't we send a big satellite dish up in space? Why didn't Apollo astronauts take a telescope to the moon? Have NASA become largely irrelevant in recent years due to a progress made by other companies such as Amazon? What do NASA employees think of SpaceX? Why did NASA stop going to the moon? How much does an average space walk cost NASA? Why does the space shuttle require a fighter jet escort?