Presolar grains are interstellar solid matter in the form of tiny solid grains that originated at a time before the Sun was formed. Presolar grains formed...

temperature. The existence of presolar grains proved this historic picture incorrect. Cosmic dust is made of dust grains and aggregates into dust particles...

rare. Until the 1950s, no other source for moissanite other than as presolar grains in carbonaceous chondrite meteorites had been encountered. Then, in...

percent (%). An exception to this lies with the presolar grains found in primitive meteorites. These small grains condensed in the outflows of evolved ("dying")...

of cosmic dust and is frequently called presolar grains. The measured isotopic compositions in stardust grains demonstrate many aspects of nucleosynthesis...

Japanese astrophysicist who focuses upon presolar grains. She developed the method for isolating presolar grains in primitive meteorites and also researched...

known as presolar grains, of mineral grains from AGB stars are available for laboratory analysis in the form of individual refractory presolar grains. These...

habitually refer to them as presolar grains. The s-process enriched grains are mostly silicon carbide (SiC). The origin of these grains is demonstrated by laboratory...

of meteoritics Panspermia That makes the stardust grains in the Murchison meteorite presolar grains, since they originated at a time before the Sun was...

include "stardust particles" from the present-day interstellar medium. Presolar grains (extracted from meteorites and interplanetary dust particles) that...