Near Rectilinear Halo Orbit? (NRLHO) - Simple explanation

A simple, easy-to-understand explanation of a Near Rectilinear Halo Orbit (NRLHO). This is the orbit that will be utilized by the Artemis moon missions. This polar orbit allows for easy access to the lunar poles. The next humans to land on the moon will likely explore regions on the moon's south pole. They will likely find water there in the form of ice!

[jeffjacob]

Thank you for this explanation! Very clear and well explained!

[volkris]

I watched a bunch of videos trying to explain this concept, but this video explained it far better than any of the others. Thanks! I finally understand!

[fabiohenriquesaudio]

Extremely clear explanation! Thank you! But how do you actually change a non-halo orbit into a halo one? I suppose you must give the orbiting object a little push in a direction perpendicular to the North-South pole, so that it would turn around this axis once every moon orbit around the earth.

[tator]

I’m watching that the reason it’s not used normally. As far as the crew being on the moon. Needing help. From a space station that’s not a 6 day orbit.

[jeffjacob]

Given the unique characteristics of NRLHO, where the orbit brings the spacecraft close to the lunar surface only at specific intervals, does this create more stringent time constraints for landing operations for the HLS at the specific point of the south pole compared to the Apollo missions, which utilized a continuous, close orbit around the Moon?

[universalgaming]

Sir, the James Webb Telescope is in halo orbit. What is the meaning of halo orbit in this case?