Cometary nuclei contain the least modified material from the formative epoch of our
planetary system, and their compositions reflect a range of processes experienced by …

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 …

Water is a fundamental molecule in the star and planet formation process, essential for
catalysing the growth of solid material and the formation of planetesimals within disks …

Although sunlight-driven water splitting is a promising route to sustainable hydrogen fuel
production, widespread implementation is hampered by the expense of the necessary …

Determining the source (s) of hydrogen, carbon, and nitrogen accreted by Earth is important
for understanding the origins of water and life and for constraining dynamical processes that …

This article reviews our current understanding of terrestrial planet formation. The focus is on
computer simulations of the dynamical aspects of the accretion process. Throughout the …

▪ Abstract Our understanding of the evolution of organic molecules, and their voyage from
molecular clouds to the early solar system and Earth, has changed dramatically …

In the primordial solar system, the most plausible sources of the water accreted by the Earth
were in the outer asteroid belt, in the giant planet regions, and in the Kuiper Belt. We …

For decades, the source of Earth's volatiles, especially water with a deuterium-to-hydrogen
ratio (D/H) of (1.558±0.001)× 10− 4, has been a subject of debate. The similarity of Earth's …

Accretion left the terrestrial planets depleted in volatile components. Here I examine
evidence for the hypothesis that the Moon and the Earth were essentially dry immediately …