Did the US soft-land on the South Pole of the Moon ?

In my previous post, I detailed my analyses of the terrain characteristics of the actual landing site of Odysseus. Though my post was primarily focused on technical analysis of just the landing location, I was very curious during the missions about how it landed. For those who may not have been following closely, the lead-up to the touchdown was fraught with tension and drama, surpassing even the most elaborate plots of Indian TV soap operas.

Several have critiqued the oblique communications from Intuitive Machines over how the IM-1 landed, including fellow Space writer Jatan. From its miscommunication over its intended landing site to its repeated "excellent health" bulletins when in actuality - it was riddled with several malfunctions.

Despite its many failures leading up to the actual touchdown, I do not want to discount its achievement of landing its equipment on the moon, given the previous failed attempt.

But, the one that stuck with me the most is the quote from NASA itself.

This mission is the first U.S. soft landing on the Moon in more than 50 years – NASA

Here's what Steve Altemus said for SpaceNews.

“We had some very high level mission objectives to touch down softly on the surface of the moon — softly and safely — and return scientific data to our customers,” said Steve Altemus, chief executive of Intuitive Machines. “Both of those objectives are met, so in our minds this is an unqualified success.”

continued ...

“A soft touchdown on the moon in a great accomplishment,” said Joel Kearns, deputy associate administrator for exploration in NASA’s Science Mission Directorate

So, did it? Did it land softly? What does soft-landing mean for real? How do you define it – is there any scientific explanation or any reasonably acceptable definition here? As a man of science, I'd like to take my personal feelings and opinions out from the equation and objectively assess this for once.

what does a soft landing mean - scientifically speaking?

Landing, in its broad sense, is a collision process where the legs of a lander make contact with the surface of a celestial body. In the case of landing on the moon, we can simplify it by saying that the lander has successfully made contact with the lunar surface. The question of how the landing was achieved is of utmost relevance here.

Landing assessment is crucial in mission planning, due to the challenge posed by Earth’s differing gravity [1]. To overcome this, various simulations, grounded in mathematical models developed during the Apollo missions [2][3], have been created. These simulations are essential for validating the models and evaluating the touchdown dynamics at the landing site [4][5]. Simulating these conditions accurately is challenging, highlighting the complexity of replicating extraterrestrial landing environments on Earth [1].

It is also to be noted that the stability criteria are highly dependent on the mission and, the lander is designed accordingly - for which nominal design parameters are set - meaning there are no singular operating parameters that seem to be true, however, there seem to be one common stability criterion:

• Overtipping (Duh?!)