Cory Huston/NASA via AP
- No human has stepped foot on the moon since 1972.
- NASA just announced it won't fly to the moon until at least 2025 and won't land until 2026.
- Safety and technical issues caused the agency to push back this year's planned flight.
Astronauts will have to wait until next year before flying to the moon and another few years before landing on it, under the latest round of delays announced by NASA on Tuesday.