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asteroids

A bolide in the sky
Posted inNews

Data from Satellites Help Uncover Exploding Meteors

by Emily Moskal 13 December 202113 December 2021

By using data from two lightning-spotting satellites, researchers measure explosions of thousands of small meteors and create a database that could help the planetary defense community.

Artist’s rendering of the near-Earth object Kamo’oalewa
Posted inNews

Asteroid May Be a Chip off the Old Moon

by Stacy Kish 9 December 202121 March 2022

Spectral data suggest that Kamo‘oalewa, a near-Earth asteroid, has a composition similar to lunar rocks.

Asteroids in space
Posted inNews

A Remarkably Constant History of Meteorite Strikes

by Katherine Kornei 13 July 20214 October 2021

Researchers dissolve chunks of the ancient seafloor to trace Earth’s impact history and find that colossal clashes between asteroids don’t often trigger an uptick in meteorite strikes.

A large magma furnace pours a mixture of silicate and metallic lava onto a flat surface, with a pool of semicooled lava flowing. The lava is black, orange, yellow, and silver.
Posted inNews

Imagining What a Metal Volcano Would Look Like

by Kimberly M. S. Cartier 21 April 202110 November 2021

Large-scale lava experiments are helping scientists imagine how metallic lava would flow across and shape a landscape, either on Earth or on a distant asteroid.

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 202126 January 2023

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.

Image showing particles being ejected from the asteroid Bennu on 6 January 2019
Posted inEditors' Vox

Up Close with an Active Asteroid

by Catherine W. V. Wolner, C. W. Hergenrother and D. S. Lauretta 9 September 20202 February 2022

A new journal special collection investigates the ejection of particles from the asteroid Bennu and the implications of these observations for asteroid science.

The Chicxulub impact event, framed by fluffy clouds and flying pterosaurs
Posted inNews

Asteroid Impact, Not Volcanism, Likely Spelled Dinosaurs’ End

by Katherine Kornei 21 July 202010 November 2021

Using climate and habitat modeling, researchers show that solar dimming caused by an asteroid impact would have plunged the world into an “impact winter” and decimated dinosaur habitats.

Drill rig in water
Posted inNews

Chicxulub Impact Crater Hosted a Long-Lived Hydrothermal System

by Katherine Kornei 30 June 20207 March 2022

Chemical and mineralogical evidence of fluid flow—potentially conducive to microscopic life—was revealed in rock cores extracted from the crater’s “peak ring.”

Black-and-white satellite image of the asteroid Ryugu
Posted inNews

Sunburned Surface Reveals Asteroid Formation and Orbital Secrets

by Megan Sever 5 June 202015 February 2022

Thanks to spectacular high-resolution images from Hayabusa2, scientists can now better estimate how and when the asteroid Ryugu formed, how its orbit has changed over time, and what its surface looks like.

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