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craters

A close-up image of the Moon showing a single large crater surrounded by a field of smaller craters
Posted inResearch Spotlights

Decrypting Lunar Craters Quickly and Easily

by Saima May Sidik 14 July 202314 July 2023

Machine learning can reveal the stories written in the marks on the Moon.

A satellite image of the surface of Mars showing snaking channels and other water-sculpted features
Posted inNews

Asteroid Impacts Could Have Warmed Ancient Mars

Katherine Kornei, Science Writer by Katherine Kornei 17 April 202317 April 2023

Hydrogen released during large impacts might have boosted Mars’s surface temperature above freezing for thousands or even millions of years, enabling liquid water to flow over the Red Planet.

An artist’s rendering of three hazy rings surrounding the Sun near the orbits of Mercury, Venus, and Earth
Posted inNews

Mercury Isn’t Alone in Orbit, and Scientists Don’t Know Why

by Jure Japelj 27 February 202324 May 2023

A cloud of dust traces the innermost planet’s orbital path. By all accounts, it shouldn’t be there.

Posted inEditors' Highlights

Dust on Mars? The Answer, My Friend, is Blowin’ in the Wind

by Germán Martinez 21 February 202317 February 2023

The first flights of a helicopter on another planet are used to study dust lifting and mobilization in Jezero Crater, Mars.

Two-image animation of a location on Mercury’s surface showing a small impact event
Posted inResearch Spotlights

MESSENGER Reveals a More Dynamic Mercury Surface

by Morgan Rehnberg 28 September 202225 January 2023

Image pairs indicate that 99% of the planet’s surface could be altered in the next 25 million years.

Artistic interpretation in which part of Earth is seen from above, and a bright trail of light pierces clouds and ends in what looks like an explosion
Posted inNews

Impact Crater off the African Coast May Be Linked to Chicxulub

Katherine Kornei, Science Writer by Katherine Kornei 19 September 202213 October 2022

The underwater crater, spotted serendipitously in commercial observations of seafloor sediments, is believed to have formed at roughly the same time as the famous Cretaceous-Paleogene impact event.

Wireframe view of the Mare Tranquillitatis pit.
Posted inEditors' Highlights

The Shape of Pits on the Moon

by Laurent G. J. Montési 24 August 202222 August 2023

Three-dimensional reconstructions enable virtual exploration of pits on the Moon.

Illustration of two spacecraft near the Moon, with Earth in the background.
Posted inNews

Moon’s Porosity Changes Cratering History, Study Says

Damond Benningfield, Science Writer by Damond Benningfield 3 August 20224 October 2022

Gravity field measurements from decade-old lunar orbiter provide a proxy for counting craters.

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

Katherine Kornei, Science Writer 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.

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