Results 1 to 10 of about 455 (143)

Multiple moonlet mergers as the origin of the Dinkinesh-Selam system [PDF]

open access: yesNature Communications
On November 1st, 2023, the Lucy spacecraft encountered the main-belt asteroid Dinkinesh, revealing the first confirmed contact binary moon, (152830) Dinkinesh I Selam.
S. D. Raducan   +9 more
doaj   +2 more sources

Diverse configurations of binary asteroids explained by multi-generation satellites [PDF]

open access: yesNature Communications
Binary asteroid systems are ubiquitous in the Solar System. Many of them originate from rotational breakup, where an asteroid’s spin-up triggers mass shedding and subsequent satellite formation from a transient debris disk.
Wen-Yue Dai   +12 more
doaj   +2 more sources

The Potential Danger to Satellites due to Ejecta from a 2032 Lunar Impact by Asteroid 2024 YR4

open access: yesAstrophysical Journal Letters
On 2032 December 22, the 60 m diameter asteroid 2024 YR _4 has a 4% chance of impacting the Moon. Such an impact would release 6.5 MT TNT equivalent energy and produce a ∼1 km diameter crater.
Paul Wiegert   +3 more
exaly   +2 more sources

Multisatellite Task Allocation and Orbit Planning for Asteroid Terminal Defence

open access: yesAerospace, 2022
Near-Earth asteroids are a great threat to the Earth, especially potential rendezvous and collision asteroids. To protect the Earth from an asteroid collision, it is necessary to investigate the asteroid defence problem.
Yuelong Luo   +4 more
doaj   +1 more source

Physical Properties of the Young Asteroid Pair 2010 UM26 and 2010 RN221

open access: yesThe Astronomical Journal, 2023
The main belt asteroids 458271 (2010 UM26) and 2010 RN221 share almost identical orbital elements, and currently appear as comoving objects ∼30″ apart in the plane of the sky.
David Jewitt   +3 more
doaj   +1 more source

Carbon Speciation and Solubility in Silicate Melts

open access: yesGeophysical Monograph Series, Page 179-194., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Natalia Solomatova   +2 more
wiley  

+2 more sources

Environmental Impact of Silicic Magmatism in Large Igneous Province Events

open access: yesGeophysical Monograph Series, Page 133-151., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Scott E. Bryan
wiley  

+1 more source

Design and ballistic analysis of the mission for long-term study of the asteroid Apophis by a nanosatellite with an electric rocket propulsion system

open access: yesКосмические аппараты и технологии, 2020
The paper considers non-spherical objects with low gravitational attraction, such as asteroids, satellites of the planet and comets. We considered possibility of a mission to small bodies of the solar system of irregular shape on the example of the ...
O. L. Starinova   +2 more
doaj   +1 more source

THE PRECESSION OF ASTEROID 1620 GEOGRAPHOS

open access: yesOdessa Astronomical Publications, 2017
The frequency analysis of the fine photometric effects in the photometric observation obtained during asteroid 1620 Geographos approaching to Earth in 1994 allowed to derive the precession of asteroid spin axis.
V. V. Prokof'eva   +2 more
doaj   +1 more source

Near to Mid-infrared Spectroscopy of (65803) Didymos as Observed by JWST: Characterization Observations Supporting the Double Asteroid Redirection Test

open access: yesThe Planetary Science Journal, 2023
The Didymos binary asteroid was the target of the Double Asteroid Redirection Test (DART) mission, which intentionally impacted Dimorphos, the smaller member of the binary system.
Andrew S. Rivkin   +19 more
doaj   +1 more source

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