Why Are Comet Heads Green – But Not Their Tails? Accidental Discovery Leads to Solution of 90-Year-Old Puzzle

An accidental discovery and a love of spectroscopic perturbations leads to the solution of a 90-year-old puzzle. In a global collaboration, a team of researchers recently proved a 90-year-old theory on why comets’ heads, but never the tails, are green. The scientific explanation, published rec

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