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meteors & meteorites

Black-and-white satellite photo of the Martian surface before and after a meteor impact
Posted inNews

Meteor Impact Could Inform Martian Mysteries

by Caroline Hasler 16 December 202216 December 2022

The impact sent surface waves rippling over the Martian surface all the way to NASA’s InSight lander, giving scientists a rare view of the planet’s outer layer.

A pebble-sized meteorite sits next to a dime for scale.
Posted inNews

Martian Meteorites Offer a Tantalizing Glimpse of the Red Planet

by Katherine Kornei 23 November 202223 November 2022

By studying these literal chunks of Mars, scientists are learning more about the Red Planet’s deep interior and impact history.

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 202221 October 2022

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.

Monash University Professor Andrew Tomkins (left) and Royal Melbourne Institute of Technology (RMIT) Ph.D. scholar Alan Salek examine a ureilite meteorite sample at the RMIT Microscopy and Microanalysis Facility.
Posted inNews

Rare Meteorites Shed Light on Diamond Formation

by Katherine Kornei 18 October 202218 October 2022

By studying meteorites believed to be remnants of the catastrophic breakup of a dwarf planet, researchers are learning how lonsdaleite, a particularly hard type of diamond, forms in nature.

Gloved hands hold a dark chunk of rock, a part of the Aguas Zarcas meteorite.
Posted inNews

Tiny “Pancakes” Suggest Some Asteroids May Stay Active

by Damond Benningfield 22 September 202222 September 2022

Analysis of a meteorite that fell in Costa Rica shows that its parent body may resemble the asteroid Bennu.

An artist’s rendering of North America in the weeks following the Chicxulub impact shows freezing conditions and skies hazy with sulfate aerosols.
Posted inScience Updates

A Post-Impact Deep Freeze for Dinosaurs

by Aubrey Zerkle 2 September 20225 October 2022

New research supports the hypothesis that dinosaurs were done in by climate change after an asteroid impact kicked up a massive plume of sulfur gases that circled the globe for several decades.

Two young people riding aboard a boat pick through mud with their hands in search of meteorites.
Posted inNews

Community Scientists Recover Micrometeorites from Lake Michigan

by Katherine Kornei 15 August 202215 August 2022

A team of scientists, educators, and teenagers discovered the objects, some of which may have been delivered by a fireball that streaked across the sky in 2017.

A small fragment of rock, part of a meteorite from the planet Mars.
Posted inNews

Flipping the Sequence of Martian Formation

by Damond Benningfield 15 July 202219 July 2022

Analysis of the Chassigny meteorite suggests the planet acquired most of its interior volatiles from meteorites, not from the solar nebula.

Image of the meteorite Allen Hills 83100 illustrating spectral differences
Posted inEditors' Highlights

Pushing the Limits of IR Spectra: Using Nano-FTIR on Meteorites

by David Trang 16 May 202219 January 2023

A new method, nano-FTIR, is used to examine microstructures and processes on grains, displaying its benefit for examining asteroid returned samples through a meteorite.

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 202221 October 2022

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.

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