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early Earth

A blue and white glacier over water
Posted inNews

Evidence of Earth’s Oldest Glaciers Found in South Africa

by Nathaniel Scharping 17 August 202317 August 2023

The ancient glaciers hint at an Archaean Earth that may have looked similar in some ways to our own time.

A circular cloud of black and blue dust shadows a small white star.
Posted inNews

Molten Meteorites Didn’t Deliver Earth’s Water

by Caroline Hasler 25 April 202325 April 2023

A new study has ruled out large, once-molten meteorites called achondrites as sources of Earth’s water.

Plants with thick, fleshy, pointed green leaves in the foreground, brown fossil in the background
Posted inNews

Small Shrubs May Have Played a Large Role in Decarbonizing the Ancient Atmosphere

by Meghie Rodrigues 9 February 20239 February 2023

Vascular plants may have contributed to shaping Earth’s atmosphere long before trees evolved.

Posted inEditors' Highlights

The Crust Travels to the Earth’s Core and Back in Record Time

by Vincent Salters 16 December 20228 February 2023

Subduction of continental crust around the Gondwana supercontinent may explain the mantle Dupal anomaly of the southern hemisphere.

Researchers study banded iron formations in Karijini National Park, Western Australia.
Posted inNews

A Day in the Life Used to Be 17 Hours

by Emily Shepherd 10 November 202211 November 2022

The Moon was a lot closer to Earth 2.46 billion years ago, and the shorter distance contributed to shorter days.

La visión de un artista que nos ofrece una visión de la formación de los planetas: Cerca de la estrella, las partículas de polvo se convierten en planetesimales y planetas similares a la Tierra. En la parte más lejana, el gas se acumula en los núcleos planetarios para la formación de gigantes similares a Júpiter.
Posted inNews

Isótopos de criptón proporcionan nuevos indicios sobre el pasado de los planetas

by Carolyn Wilke 21 October 202217 March 2023

Para determinar cómo los elementos cruciales para el desarrollo de la vida llegaron a la Tierra, los científicos estudian los gases nobles. Actualmente, métodos mejorados traen consigo nuevos indicios a partir del criptón, el gas noble más enigmático.

Artistic impression of an orange-colored early Earth
Posted inNews

Early Life Learned to Love Oxygen Long Before It Was Cool

by Jennifer Schmidt 16 September 202221 February 2023

Laboratory experiments show that earthquakes may have helped early life evolve in an oxygen-free world.

An artist’s impression of planet formation: Close to the star, dust particles grow into planetesimals and Earth-like planets. Farther away, gas accretes on planetary cores to create Jupiter-like giants.
Posted inNews

Krypton Isotopes Provide New Clues to Planets’ Pasts

by Carolyn Wilke 4 May 202217 March 2023

To trace how crucial ingredients for life arrived at Earth, scientists track noble gases. Now, improved methods are drawing new clues from krypton, the most cryptic of noble gases.

Posted inEditors' Highlights

Zircons and Plate Tectonics

by Vincent Salters 29 April 20229 May 2023

New data on ancient zircons points to a transition from stagnant lid to subduction style tectonics at 3.6 Ga ago.

A back-scattered electron image of an experimental charge showing a miniaturized model of the core-mantle boundary equilibrated at pressure-temperature conditions thought to prevail during core formation.
Posted inEditors' Highlights

New Results Deepen the Mystery of Earth’s Early Magnetic Field

by Carolina Lithgow-Bertelloni 14 April 202214 March 2023

How was Earth’s early magnetic field produced? New experimental results and modeling show that the energy source could not have come from exsolution of lithophile elements from the core.

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