February 12, 2019

The protoplanetary disk surrounding the star Orion Source I (Image ALMA (NRAO/ESO/NAOJ); NRAO/AUI/NSF; Gemini Observatory/AURA)

An article published in the journal “The Astrophysical Journal” reports the discovery of the presence of salts and in particular of the ordinary table salt, in the protoplanetary disk surrounding the young star Orion Source I. A team of astronomers used the ALMA radio telescope to detect the “chemical signatures” that indicate the presence of a number of molecules including two salts. In particular, sodium chloride seems to make up a considerable part of the disk given that the estimated mass is around one sextillion kilograms, more or less equivalent to the water of the Earth’s oceans.