Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have detected the chemical fingerprints of sodium chloride (NaCl), potassium chloride (KCl), and their 37Cl and 41K isotopologues, in a high-mass circumstellar disk around Orion Source I, a young, massive star about 1,500 light-years away. An artist’s impression of Orion Source I, a young, massive star about 1,500 light-years away. The blue region — about 1/3 the way...
