Heavily cratered surfaces on the Moon, Mars, and Mercury show that the terrestrial planets
were battered by an intense bombardment during their first billion years or more, but the …

Early Mars climate research has well-defined goals (MEPAG 2018). Achieving these goals
requires geologists and climate modelers to coordinate. Coordination is easier if results are …

The Moon has a magmatic and thermal history that is distinct from that of the terrestrial
planets. Radioisotope dating of lunar samples suggests that most lunar basaltic magmatism …

Orbital data indicate that the youngest volcanic units on the Moon are basalt lavas in
Oceanus Procellarum, a region with high levels of the heat-producing elements potassium …

The timeline of the lunar bombardment in the first Gy of Solar System history remains
unclear. Basin-forming impacts (eg Imbrium, Orientale), occurred 3.9–3.7 Gy ago, ie 600 …

Lunar chronology models are built by associating the radiometric ages of samples returned
by the Apollo and Luna missions measured in the laboratory with compiled crater …

The history of mare volcanism critically informs the thermal evolution of the Moon. However,
young volcanic eruptions are poorly constrained by remote observations and limited …

The terrestrial impact crater record is commonly assumed to be biased, with erosion thought
to eliminate older craters, even on stable terrains. Given that the same projectile population …

If properly interpreted, the impact record of the Moon, Earth's nearest neighbour, can be
used to gain insights into how the Earth has been influenced by impacting events since its …

What allows a planet to be both within a potentially habitable zone and sustain habitability
over long geologic time? With the advent of exoplanetary astronomy and the ongoing …