How We Landed on the Moon

Since 1966, NASA has been landing the unmanned Surveyor probes onto the surface of the moon to collect data. In December 1968, NASA managed to get a manned spacecraft into lunar orbit with the Apollo 8 mission. The next goal to accomplish was to combine these feats in order to land a crewed spaceship onto the moon’s surface.

Moon land

The Lunar Module seen from the Command Module. Credit: NASA

The first step was to find a suitable landing site. The Lunar Module would need to have a flat surface with no craters nearby. Additionally, the area would need to be well-lit enough at the time of landing. The approach would have to be clear so that the landing radar could work at its best. Finally, it would need to be at a location where landing and liftoff would use as little fuel as possible to make the return journey to orbit possible. Using images taken from the Lunar Orbiter satellites, the Apollo 8, and the Apollo 10 missions NASA narrowed down the number of possible landing sites to 5. After further investigation, the final landing site was chosen: The Sea of Tranquility.

moon landed sea

Once Apollo 11 was in orbit around the moon, the Lunar Module detached from the Command Module and fired its engine to begin deorbiting. As it slowed its horizontal and vertical velocity, the Lunar Module used small thrusters to adjust its trajectory until it was hovering above the landing site. Then it slowly descended until it finally landed softly onto the lunar soil.

moon landed 2

After the Apollo 11 mission, five other lunar landings occurred each more successful than the last. These missions helped build the foundation for NASA’s accomplishments over the past 50 years. Without the scientific and engineering breakthroughs of the Apollo program, our understanding of the universe would be vastly less.

Written By: Scott Yarbrough

WELCOME TO OUR ASTROCAMP BLOG

We would like to thank you for visiting our blog. AstroCamp is a hands-on physical science program with an emphasis on astronomy and space exploration. Our classes and activities are designed to inspire students toward future success in their academic and personal pursuits. This blog is intended to provide you with up-to-date news and information about our camp programs, as well as current science and astronomical happenings. This blog has been created by our staff who have at least a Bachelors Degree in Physics or Astronomy, however it is not uncommon for them to have a Masters Degree or PhD. We encourage you to also follow us on Facebook, Instagram, Google+, Twitter, and Vine to see even more of our interesting science, space and astronomy information. Feel free to leave comments, questions, or share our blog with others. Please visit www.astrocampschool.org for additional information. Happy Reading!

Categories

Archives

Tags