Carlos Raymond https://carlosraymond.com/ Science · Essays · Research Notes Measuring an Asteroid's Rotation Period From a Backyard Telescopehttps://carlosraymond.com/articles/_exemplo-preview/Mon, 20 Jul 2026 12:00:00 GMTUsing open photometric data and a consumer telescope, this study estimates the rotation period of asteroid (433) Eros through light-curve analysis, and examines where amateur measurement diverges from observatory-grade results. Why the Collatz Conjecture Resists Elementary Attackhttps://carlosraymond.com/articles/_exemplo2-preview/Sun, 12 Jul 2026 12:00:00 GMTA guided tour of what is actually proven about the 3n+1 problem, and what has quietly become folklore.