increases the metallicities of the parent stars. There is cer- tainly evidence based on abundance analyses in our solar system that impacts from bodies in the asteroid belt or outer solar system have changed the surface abundances of the earth and other planets (e.g., Morbidelli et al. 2000...
Solar system, assemblage consisting of the Sun and those bodies orbiting it: 8 planets with about 210 known planetary satellites; many asteroids, some with their own satellites; comets and other icy bodies; and vast reaches of highly tenuous gas and dust
Conjunction, in astronomy, an apparent meeting or passing of two or more celestial bodies. The Moon is in conjunction with the Sun at the phase of New Moon, when it moves between the Earth and Sun and the side turned toward the Earth is dark. Inferior pl