6 minutes
Houston told Apollo 13 to shut down the command module and transfer the astronauts to the lunar module, as the command module's oxygen supply was compromised. They were also instructed to make the safest possible reentry into Earth's atmosphere.
Astronauts stayed inside the Apollo Command Module during launch and reentry. This module was attached to the Saturn V rocket during launch and detached for reentry to bring the astronauts safely back to Earth.
No, all Apollo missions successfully landed back on Earth after completing their missions to the moon.
"Houston, we have a problem" was said during the Apollo 13 mission in 1970. This phrase was actually slightly misquoted from the actual communication, which was "Houston, we've had a problem."
Apollo 13 was out of contact with mission control for approximately 3 minutes during reentry to Earth's atmosphere. This period of radio blackout was caused by intense heat and plasma surrounding the spacecraft during reentry.
Lack of ballast. (They were light because they didn't collect any moon rocks.)
Upon reentry, Neil Armstrong famously said, "This is the Apollo 11 crew. We are returning from the Moon." His words marked the conclusion of a historic mission that made him the first person to walk on the lunar surface. Armstrong's statement reflected the significance of their journey and the successful completion of the Apollo 11 mission.
Apollo 13 (starring Tom Hanks, "Houston, we have a problem.")
Astronauts for the Apollo 13 mission trained at the NASA Manned Spacecraft Center, which is located in Houston, Texas.
Apollo 4 did not fail; it was the first unmanned test flight of the Apollo program and it was successful. Apollo 4 was launched on November 9, 1967, and it demonstrated the capabilities of the Saturn V rocket, the Command Module, and the reentry system.
"Apollo 13" (1995).
Houston, TX, USA