Our Sun and planetary system were born about 4.5 billion years ago. How did this happen,
and what is the nature of our heritage from these early times? This review tries to address …

This review examines our current understanding of the possible birth environments of our
Solar System. Because most stars form within groups and clusters, the question becomes …

Accumulation of dust and ice particles into planetesimals is an important step in the planet
formation process. Planetesimals are the seeds of both terrestrial planets and the solid cores …

The lead-lead isochron age of chondrules in the CR chondrite Acfer 059 is 4564.7±0.6
million years ago (Ma), whereas the lead isotopic age of calcium-aluminum–rich inclusions …

All planetary materials sampled thus far vary in their relative abundance of the major isotope
of oxygen, 16O, such that it has not been possible to define a primordial solar system …

Meteorite research is fundamental to our understanding of the origin and early history of the
Solar System. This book considers the mechanism and timing of core formation and basaltic …

Hydrogen, carbon, nitrogen, and oxygen isotopic compositions are heterogeneous among
comet 81P/Wild 2 particle fragments; however, extreme isotopic anomalies are rare …

The Sun's magnetic activity has steadily declined during its main-sequence life. While the
solar photospheric luminosity was about 30% lower 4.6 Gyr ago when the Sun arrived on …

Meteorites contain relict decay products of short-lived radionuclides that were present in the
protoplanetary disk when asteroids and planets formed. Several studies reported a high …

The abundances of short-lived radionuclides in the early Solar System (ESS) are reviewed,
as well as the methodology used in determining them. These results are compared with the …