Question: How Long Was The Journey From The Moon To Earth?

Journey of Apollo 15 to the Moon

This article contains a list of general references, but it is largely unverified; please help improve it by adding more precise citations. Apollo 15 was launched on July 26, 1971, at 9:34:00 a.m. EST, and it took four days to reach the Moon.

Launch and trans-lunar injection

The S-IVB was lost through an open vent after the rocket was pitched down too quickly, increasing the spacecraft’s speed from 25,620 feet per second (7,809 meters per second) to 35,522 feet per second (10,827 meters per hour). The altitude had been raised to 167.4 nautical miles (310.0 kilometers).

Engine problems

Because a light on the control panel indicated that the service propulsion system (SPS) was firing, Mission Control decided to cancel the first midcourse correction (MCC-1) and put the spacecraft into thermal control (PTC) mode, also known as “barbecue mode,” because the spacecraft was put into slow roll so that heat was evenly distributed.

Day 2

A glass cover on one of the tapemeters had broken, and there was glass in the cabin, so Apollo 15’s first full day in space ended with a check of the lunar module, Falcon. The crew replaced the hatch and went to bed before returning to Earth.

Day 3

The crew entered Falcon for the second time after passing the point where lunar gravity becomes stronger than Earth’s, as experienced by Apollo 15. Mission Control instructed them to vacuum the spacecraft and then leave the vacuum cleaner running while they completed the rest of their “housekeeping.”

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Day 4 and LOI

The crew put on A7L space suits for the jettisoning of the SIM bay door on Day 4, the first test of the new procedures for using both SPS during a long burn, which lasted 0.91 seconds and added 5.4ft/s (1.65m/s) to their speed. Apollo 15 travelled over regions that had never been covered on previous flights. Mission Control predicted that by the time the crew awoke the next “morning,” the l

Lunar orbit up to PDI

The crew spent the time behind the Moon activating the LM and doing general housekeeping in preparation for the Falcon 9 rocket’s undocking from the International Space Station at the end of their eleventh orbit of the Moon.


Play media from the T-30s to the T-40s.


Archived from the original on 2010-02-17. CS1 maint: archived copy with “Apollo” as title (link). Apollo 15 Flight Journal. Apollo 15 Preliminary Science Report. Moonport: A History of Apollo Launch Facilities and Operations.

How long did it take for Apollo 11 to reach Earth?

The rocket’s third stage fired again just over two hours later, during Apollo 11’s second orbit, to boost the spacecraft towards the moon – the so-called Trans Lunar Insertion or TLI.

Why did NASA stop going to the Moon after Apollo 17?

Future Apollo missions were canceled in 1970, and Apollo 17 became the last manned mission to the Moon for an indefinite period of time, owing to the high cost of getting to the Moon, which was ironically astronomical.

How much does it cost to go to the Moon?

Circumlunar flyby: Space Adventures is charging $150 million per seat for a circumlunar flyby mission, which includes months of ground-based training, despite the fact that this is only a fly-by mission and will not land on the Moon.

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How many times NASA landed on moon?

Between 1969 and 1972, the United States made six crewed landings and numerous uncrewed landings, with no soft landings between August 22, 1976, and December 14, 2013.

What was left on the Moon?

The retroreflectors for the lunar laser ranging experiments left on the Moon by the Apollo 11, 14, and 15 astronauts, as well as the Soviet Union’s Lunokhod 1 and Lunokhod 2 missions, are the only artificial objects on the Moon that are still in use.

Is the flag still on the Moon?

The nylon flag was not designed to withstand the harsh conditions of space and was purchased from a government catalog. However, a review of photographs taken by the Lunar Reconnaissance Orbiter (LRO) indicates that flags placed during the Apollo 12, 16, and 17 missions were still standing as of 2012.

Has anyone visited Mars?

NASA’s Mariner 4 made the first successful flyby of Mars on July 14u201315, 1965. The first probes to make contact with the surface were two Soviet probes: the Mars 2 lander on November 27, and the Mars 3 lander on December 2, 1971u2014Mars 2 failed during descent, and Mars 3 landed about twenty seconds after the first Martian soft landing.

What killed Sally Ride?

The answer is yes (at least according to one astronaut): astronauts exercise for more than two hours a day, much of it on a treadmill, which puts a lot of stress on their bodies, so sports bras are commonly worn during exercise.

How much does a space suit cost?

A spacesuit used to cost around $22 million, but now they can cost up to $250 million to build from scratch.

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How much do astronaut make a year?

Nasa Astronaut Salary Ranges In the United States, Nasa Astronaut salaries range from $24,079 to $640,817, with a median of $116,165. The middle 57% of Nasa Astronauts earn between $116,169 and $291,008, with the top 86% earning $640,817.

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