This is great research and very useful (if sometimes mundane and math heavy!) work. It’s a public good and the author has made important contributions. I kind

This is great research and very useful (if sometimes mundane and math heavy!) work. It’s a public good and the author has made important contributions. I kind of chuckle that many of the comments here are complaining that the article didn’t say the one “quick way” to clean up orbital debris. Is it lasers? Space tugs? Robotic deorbit devices? No! The author did answer it - it’s tracking! Knowing where all the debris objects are and calling out debris offenders/enforcing existing regulations is really enough. This kind of work - not the hundreds of millions spent on space tug demos, harpoons, and exotic nonsense - is actually useful. Everything else is an excuse for rich VCs and armchair aficionados to yell “have you heard about Kessler syndrome?!?”