Ancient micrometeoroids carried specks of stardust, water to asteroid 4 Vesta
Wednesday, June 10, 2020 - 02:21
in Physics & Chemistry
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.