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Astronomy and planetary science are the study of objects and phenomena that occur beyond the Earth’s atmosphere. This includes investigating stars and their interaction with each other and the planetary systems that orbit them.
Oxygen isotope measurements from unequilibrated enstatite chondrites produce a steep slope on a three-isotope plot. This can be explained by the occurrence of silicate–SiO reactions in the early stages of the Solar System’s protoplanetary disk.
Gender discrimination is very much an issue in academia generally and in astronomy specifically. Through machine learning techniques, astronomy papers authored by women are shown to have 10% systematically fewer citations than those authored by men.
Constraining the timing of crustal processes and impact events remains challenging. Here, the authors show that atom probe tomography can produce highly accurate U-Pb isotopic age constraints in baddeleyite crystals, which is a common phase in terrestrial, Martian, Lunar and asteroidal materials.
It has been previously assumed that deep river channels could not have developed in the Proterozoic due to lack of vegetation. Here, the authors present remote sensing and outcrop data to show that large scale and deeply channelled river networks did exist in the Proterozoic despite the absence of vegetation.
Summer rainfall in the agriculturally-reliant Sahel is extremely variable, with the region particularly vulnerable to major droughts. Here, the authors investigate the mechanisms that drive Sahel summer rainfall change on inter-annual and multi-year timescales and show that Sahel rainfall can be skilfully predicted.
We asked microbiologist and NASA astronaut Kate Rubins about her time on the International Space Station, the challenges of working with bugs in space, and what's next for science that is out of this world.
From roles in the health, nutrition and performance of humans during spaceflight, through to the question of life on other worlds, microbiology has fundamental contributions to make to our exploration of the cosmos.
New detectors for radio telescopes can map emissions from many different molecules simultaneously across interstellar clouds. One such pioneering study has probed a wide area of a star-forming cloud in the Orion constellation.
The neighbourhoods of extremely bright astronomical objects called quasars in the early Universe have been incompletely probed. Observations suggest that these regions harbour some of the most massive known galaxies. See Letter p.457