Jupiter’s atmospheric composition has been called into question through observations made using an old technique by an amateur astronomer, Steve Hill. The findings have indicated that the planet’s iconic swirling clouds may not be composed of ammonia ice, as previously assumed. This revelation stems from data collected with commercial telescopes and spectral filters, presenting new perspectives on the gas giant’s atmospheric dynamics and chemistry. The observations have sparked further investigation into the structure of Jupiter‘s cloud layers. Findings from Observational Studies According to research published in Earth and Space Science, Hill applied a method known as band-depth analysis. This technique measures light absorption at specific wavelengths to map the abundance of gases like ammonia and methane in Jupiter’s atmosphere. As reported by space.com, the data revealed that reflective cloud layers are located at pressure levels of 2-3 bar, far deeper than where ammonia ice was expected to condense at 0.7 bar. Patrick Irwin, a planetary physicist at the University of Oxford, reviewed Hill’s results and confirmed their accuracy through comparisons with data from instruments such …