4 years ago
Ancient micrometeoroids carried specks of stardust, water to asteroid 4 Vesta
The formation of our solar system was a messy affair. Most of the material that existed before its formation—material formed around other, long-dead stars—was vaporized, then recondensed into new materials. But some grains of that material, formed before the sun's birth, still persist.
Continue Reading
https://phys.org
Join the Discussion