Boring oldfluorinehad a star past . The cosmic origins of the chemical element have always been a enigma , as scientist have three competing theories for the source of fluorine on our planet . But astronomers now say that the very same ingredient get in many of our everyday intersection formed billions of years ago in long - dead star that were a muckle like our sun . Theworkwas published inAstrophysical Journal Letters . Fluorine was formed in now - dead mavin that were the same character as the sun but large , and towards the end of their lives . Our Lord’s Day and the planets in our solar system were also formed from the fabric from these stagnant stars , which is how our cosmos get to be deep in the element . “ So , the fluorine in our toothpaste originates from the Dominicus ’s dead ancestors , ” saysNils Ryde of Lund Universityin anews release . Ryde and an external team of astronomer studied ace formed at unlike points in the history of the existence to see if the amount of fluorine they check supports one of the three theories over the others . They used telescopes in Hawaii and a raw character of cat’s-paw tender to light with a wavelength in the midsection of the infrared spectrum , and in high resolution – a applied science that just latterly became available . By analyse light emitted by a star , astronomer can calculate the amounts of various constituent it contains . That ’s because light at certain wavelengths correspond to certain element , which are formed at eminent force per unit area and temperature inside a star .
The team found that atomic number 9 is formed towards the end of the star ’s living , when it has already expanded to become a crimson behemoth ; the element then moves to the outer voice of the champion . Later the star project off its outer portion , which go on to form a planetary nebula . Fluorine that ’s throw off out in this physical process mixes with the interstellar spiritualist – the petrol that surround the hotshot . This material will mold unexampled sun - like stars and major planet , and when these novel stars pop off , the cycle continues and the interstellar medium is enriched again .
