The isotopic composition of meteorites and terrestrial planets holds important clues about
the earliest history of the Solar System and the processes of planet formation. Recent work …

The nature of the early martian climate is one of the major unanswered questions of
planetary science. Key challenges remain, but a new wave of orbital and in situ observations …

Clues to a planet's geologic history are contained in its interior structure, particularly its core.
We detected reflections of seismic waves from the core-mantle boundary of Mars using …

Seismic recordings made during the InSight mission suggested that Mars's liquid core would
need to be approximately 27% lighter than pure liquid iron,, implying a considerable …

Earth's water, intrinsic oxidation state and metal core density are fundamental chemical
features of our planet. Studies of exoplanets provide a useful context for elucidating the …

The first samples collected by the Mars 2020 mission represent units exposed on the Jezero
Crater floor, from the potentially oldest Séítah formation outcrops to the potentially youngest …

As the search for Earth-like exoplanets gathers pace, in order to understand them, we need
comprehensive theories for how planetary atmospheres form and evolve. Written by two well …

Super-Earths–planets with sizes between the Earth and Neptune–are found in tighter orbits
than that of the Earth around more than one third of main sequence stars. It has been …

Geochemical and astronomical evidence demonstrates that planet formation occurred in two
spatially and temporally separated reservoirs. The origin of this dichotomy is unknown. We …

Chondrules are millimeter-sized spherules that dominate primitive meteorites (chondrites)
originating from the asteroid belt. The incorporation of chondrules into asteroidal bodies …