The Moon orbits Earth at an average distance of 384,400 kilometres. For a rocket travelling at about 40,000 km/h, the journey takes roughly three days. The Apollo 11 mission famously reached the lunar surface in 76 hours, or just over three days.
How Far Is the Moon?
The Moon's distance varies because its orbit is elliptical. At its closest (perigee), it is about 363,300 km away; at its farthest (apogee), about 405,500 km. The average is 384,400 km. Light from the Moon takes about 1.3 seconds to reach Earth.
Rocket Speed to the Moon
Most rockets travel at speeds around 40,000 km/h to escape Earth's gravity. At that speed, a direct trip would take 9.6 hours if the Moon were stationary, but because the Moon is moving and spacecraft must slow down to enter orbit, actual missions take longer. Apollo 11's command module Columbia took 76 hours from launch to lunar orbit insertion.
Why Does It Take Three Days?
Spacecraft follow a transfer orbit that uses the Moon's gravity to help them slow down. This trajectory is called a translunar injection. The three-day duration allows for precise navigation and fuel efficiency. According to NASA, the Apollo missions averaged 3 days, 3 hours to reach the Moon. Modern uncrewed missions can be faster: China's Chang'e-5 took about 4.5 days, while some probes have made the trip in as little as 8.5 hours (like the New Horizons spacecraft, which flew past the Moon en route to Pluto).
Fun Space Facts for Kids
- The Moon is about 30 Earth-diameters away.
- If you could drive a car at 100 km/h non-stop, it would take 160 days to reach the Moon.
- The first humans on the Moon (Apollo 11) landed on July 20, 1969.
- Only 12 people have ever walked on the Moon, all Americans.
“The kids' quiz question 'How long to the Moon?' is a great way to spark curiosity about space,” says Dr. Alice Gorman, space archaeologist at Flinders University. “It's not just a number; it's about understanding our place in the solar system.”
How Long Does a Rocket Take to Reach the Moon Today?
Modern missions vary. NASA's Artemis program aims to return astronauts to the Moon by 2025, with travel time similar to Apollo — about 3 days. Private missions like SpaceX's Starship may reduce travel time with advanced propulsion, but for now, three days remains the standard for crewed missions. Uncrewed cargo missions can be faster or slower depending on the orbit.
