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early Earth

Dark gray mountains and craters, seen obliquely from above.
Posted inNews

Was the Moon-Forming Impact Squishy or Crunchy?

by Matthew R. Francis 23 October 202623 October 2026

A new computer simulation adds a crust to the Earth-smashing planet Theia, showing how a proto-Moon could form from the leftovers.

A pool of hazy blue water, surrounded by a ring of darker sand, is seen on the seafloor.
Posted inResearch Spotlights

Briny “Death Pools” Hold Clues to Early Life

by Rebecca Dzombak 22 September 202622 September 2026

New evidence from the depths of the Red Sea supports the oxidation of manganese and iron as an engine for life in the earliest oceans.

这是一幅描绘早期地球的艺术构想图:星球大部分表面呈灰色且布满陨石坑,而其他区域则覆盖着蓝色的水体,或由发光的红色线条勾勒出熔岩地貌。
Posted inResearch Spotlights

宇宙轰击为前生物化学反应创造了条件

Aaron Sidder, freelance science writer by Aaron Sidder 8 July 20268 July 2026

在地球形成之初,小行星和微行星的频繁撞击塑造了地壳,并创造出可能支持前生物化学反应、甚至可能孕育早期生命的环境。

Artist’s illustration of early Earth showing much of the planet covered with a gray, crater-pocked surface, while other areas are covered with blue water or outlined by glowing red lineaments representing molten rock.
Posted inResearch Spotlights

Cosmic Bombardment Created Potential for Prebiotic Chemistry

Aaron Sidder, freelance science writer by Aaron Sidder 5 June 20268 July 2026

Frequent impacts from asteroids and planetesimals in Earth’s earliest days shaped the planet’s crust and created environments that may have supported prebiotic chemistry, and possibly even early life.

An image of the Milky Way, as seen from the Chilean desert.
Posted inNews

Zircon Crystals Could Reveal Earth’s Path Among the Stars

by Tom Metcalfe 10 October 202510 October 2025

Researchers found signs of melting in zircon crystals in the crust that correspond to our planet’s journey through the galaxy’s spiral arms.

A cliff face with pink and red layers
Posted inNews

Bacteria Battled for Iron in Earth’s Early Oceans

by Caroline Hasler 15 November 202416 January 2025

Billions of years ago, iron-oxidizing microbes may have competed for dissolved iron in the ocean, with some strains producing toxic gases that smothered their rivals.

A sphere with a mottled orange, red, yellow, and gray surface appears bright against a black background.
Posted inResearch Spotlights

How Did Magma Oceans Evolve on Early Earth and Mars?

Sarah Stanley, Science Writer by Sarah Stanley 10 October 202410 October 2024

New insights into the early timelines of rocky planets are emerging, thanks to clues from iron chemistry and primordial atmospheres.

A cross section of a core taken from Earth’s mantle, is seen under a microscope.
Posted inNews

Lost City’s Plumbing Exposed by the Longest Mantle Core Ever Drilled

by Nathaniel Scharping 12 September 202412 September 2024

The core, which is 71% complete, reveals millions of years of geologic history and the plumbing underlying hydrothermal vents.

Rocas saliendo del océano en una costa
Posted inNews

Circones de 4,000 millones de años podrían contener nuestras evidencias más antiguas de la existencia de agua dulce

by Nathaniel Scharping 4 September 20244 September 2024

Cristales australianos apuntan a la existencia de agua dulce, así como de continentes que se elevaban sobre el océano Hadeano de la Tierra.

Rocas grises bandeadas entre pasto verde y pequeñas flores blancas
Posted inNews

Sedimentos radiactivos podrían haber construido los cratones de la Tierra

Javier Barbuzano, Science Writer by Javier Barbuzano 2 August 20242 August 2024

La meteorización de los primeros continentes podría haber puesto en marcha la formación de cratones, las raíces inmutables de los continentes.

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Over a dark blue-green square appear the words Special Report: The State of the Science 1 Year On.

Features from AGU Publications

Research Spotlights

InSight into Seismology on the Red Planet

21 October 202621 October 2026
Editors' Highlights

The Geomagnetic Polarity Time Scale Revisited Once Again

22 October 202622 October 2026
Editors' Vox

Opening Access to Earth Observation Data for Disaster Mitigation

21 October 202620 October 2026
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