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Model of the evolution of the Serenitatis Basin, on the near side of the Moon.
Posted inEditors' Highlights

An Impact Basin Thermometer for the Moon

by Laurent G. J. Montési 22 April 202216 June 2022

Large impact basins on the near side of the Moon lack the annulus of thickened crust that far-side basins have. The difference can be linked to the thermal structure of the lunar crust.

A wall of ice looms over an expanse of rocks.
Posted inNews

Impact Structure Hidden Under Arctic Ice Dates to the Paleocene

by Katherine Kornei 13 April 202213 April 2022

Greenland’s Hiawatha impact structure, more than 30 kilometers in diameter, is much older than previously thought, new results suggest.

A satellite view of the Vredefort impact structure in South Africa
Posted inNews

A Giant Impact Triggered Earthquakes for Thousands of Years

by Katherine Kornei 2 February 202214 February 2022

When an asteroid struck South Africa during the Precambrian, earthquakes rocked the region for millennia as Earth’s crust reequilibrated, new research reveals.

Bull’s-eye features in rock
Posted inNews

Ejecta Discovered Near Site of Ancient Meteorite Impact

by Katherine Kornei 17 August 20218 April 2022

South Africa’s Vredefort impact structure is the largest on the planet, and researchers have now discovered the first proximal ejecta possibly deriving from the cataclysmic impact.

A lump of glass
Posted inNews

Glassy Nodules Pinpoint a Meteorite Impact

by Katherine Kornei 5 August 20215 May 2022

Researchers working in Chile’s Atacama Desert have collected thousands of “atacamaites” that suggest a meteorite struck the region roughly 8 million years ago.

Map of thorium concentrations across the South Pole–Aitken Basin on the Moon’s farside
Posted inResearch Spotlights

Moon’s Largest Crater Holds Clues About Early Lunar Mantle

by Elizabeth Thompson 12 February 202128 January 2022

An ancient impact splashed evidence of the Moon’s early mantle makeup onto its surface. Now researchers are piecing together models, maps, and samples to bring these mysteries to light.

A view of Sunset Crater, one of many scoria cones in the San Francisco volcanic fields spanning northern Arizona
Posted inNews

Ancient Eruption May Change Our Understanding of Modern Volcanoes

by Mara Johnson-Groh 5 February 202112 April 2022

Bubbles trapped in magma from a 1,000-year-old event reveal how scoria cones might erupt and what impact they may have on the landscape and atmosphere.

St. George's Church, Nördlingen, surrounded by red roofs.
Posted inNews

An Asteroid “Double Disaster” Struck Germany in the Miocene

by Katherine Kornei 27 January 20216 December 2021

By analyzing sediments jostled by ground shaking, researchers have shown that two impact craters near Stuttgart were created by independent asteroid impacts rather than a binary asteroid strike.

Plot showing a crater produced by the impact of a 10 km diameter bolide impacting a model of (16) Psyche
Posted inEditors' Highlights

Predicting the Unique Shape of Craters on Asteroid (16) Psyche

by Laurent G. J. Montési 21 December 202015 February 2022

Models link the variety of crater shapes expected on (16) Psyche with the interior structure of this unique asteroid, in preparation for the arrival of the Psyche probe in 2026.

A color mosaic close-up of the pockmarked surface of a crescent Moon
Posted inResearch Spotlights

Moon May Hold Billions of Tons of Subterranean Ice at Its Poles

by J. Pinson 20 November 202028 January 2022

By modeling over 4 billion years of the Moon’s impact history, scientists estimate that the lunar poles may harbor billions of metric tons of subsurface ice.

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