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asteroids

The Mars 2020 Perseverance rover is seen on Mars’s surface in a selfie assembled from several images taken by the rover’s robotic arm. One of the rover’s sample caching tubes is on the ground in front of the rover.
Posted inFeatures

The Past, Present, and Future of Extraterrestrial Sample Return

by Jemma Davidson and Jessica Barnes 17 July 202423 October 2024

Retrieving samples from distant solar system bodies has revolutionized our understanding of the cosmos and our place in it.

A grayish rock with white spots and a brighter brown patch sits on a reflective surface.
Posted inNews

A Splashy Meteorite Was Forged in Multiple Collisions

Damond Benningfield, Science Writer by Damond Benningfield 7 June 20249 June 2024

The Winchcombe meteorite was recovered, largely from a driveway, just hours after it fell to Earth, preserving evidence that its early relatives could have filled Earth’s oceans.

A white planet with some topography
Posted inNews

Giant Impacts Might Have Triggered Snowball Earth Events

by Elise Cutts 15 March 202420 March 2024

Running into the right space rock at the right time may have been enough to tip Earth into a runaway cold spell.

Infographic showing different parts of the Psyche spacecraft.
Posted inEditors' Highlights

Preparing to Meet a Metal-Rich Asteroid

by Francis Nimmo 28 February 202428 February 2024

The recently launched ‘Psyche’ mission will explore the eponymous asteroid and determine whether it is a fragment of a planetary core or a primordial, metal-rich body.

A spacecraft consisting of a bright central box and two cross-shaped solar panels flies above the jagged landscape of a large asteroid.
Posted inNews

Getting Psyched Up for an Asteroid Mission

Damond Benningfield, Science Writer by Damond Benningfield 4 October 20235 October 2023

The first mission to a metallic asteroid, scheduled for launch on 5 October, could provide clues to the formation of Earth and the solar system’s other inner planets.

A time-lapse of images taken by OSIRIS-REx during its touch-and-go maneuver, with the spacecraft arm centered in this video.
Posted inNews

There and Back Again: Asteroid Samples Return to Earth

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 21 September 202325 September 2023

OSIRIS-REx will help reveal Bennu’s detailed carbon chemistry and history of space weathering and unlock a key piece of the solar system’s early history.

A close-up of a smooth gray semispherical body in space with a red spherical body in the background
Posted inNews

Tiny Martian Moon May Be a Chip Off the Old Block

Javier Barbuzano, Science Writer by Javier Barbuzano 2 June 20232 June 2023

A close approach to Deimos reveals that its surface does not look like that of an asteroid, hinting at a Martian origin.

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.

Two spacecraft are visible between two large, gray asteroids, with stars in the background.
Posted inNews

NASA’s Double Asteroid Redirection Test Is a Smashing Success

Katherine Kornei, Science Writer by Katherine Kornei 12 January 202312 January 2023

The mission, focused on the Didymos-Dimorphos binary asteroid system, proved that an asteroid’s orbit can be altered by kinetic impactor technology.

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First Benchmarking System of Global Hydrological Models

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Decoding Crop Evapotranspiration

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