Results 51 to 60 of about 1,146 (137)

Ground‐Based Validation of Hera's Spacecraft Monitoring Camera

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract Hera is an ESA contribution to the international planetary defense effort. It is a deep‐space mission to the binary asteroid system Didymos and Dimorphos, designed to investigate the effects of NASA's Double Asteroid Redirection Test (DART), demonstrate autonomous navigation, and support close‐proximity investigation by two CubeSats.
D. T. Lakey, A. Schiavo, C. Guerbuez
wiley   +1 more source

Science Needs for a Terrestrial Biosphere Tipping Point Early Warning System

Reviews of Geophysics, Volume 64, Issue 4, December 2026.
Abstract Tipping points in the Earth system have the potential to cause major detrimental impacts to the biosphere and societies. Their inherent nonlinearity implies that even relatively small additional increases in external forcing might result in disproportionately large adjustments to components of the Earth system.
Jesse F. Abrams, Chris Huntingford, Sergei Petrovskii, Joshua E. Buxton, Helen Millman, Chris A. Boulton, Robert J. Parker, Cristina Ruiz Villena, Andrew M. Cunliffe, Joseph Clarke, Valerio Lucarini, Darren Ghent, Peter M. Cox, Timothy M. Lenton   +13 more
wiley   +1 more source

Mineral Extraction Scenarios From an Asteroid via Optimization Considering Rotational Dynamics

IEEE Access
This study examines how removing surface materials affects the rotational dynamics of an asteroid to design efficient asteroid mining plans. The simulations solve Euler’s equations and track variations in the inertia tensor, angular momentum, and ...
Seyedmahdiar Ziaolhagh, Mahdi Jafari-Nadoushan   +1 more
doaj   +1 more source

The Benefits of High Resolution Multispectral TIR Data and Its Impending Loss by NASA After Four Decades

Perspectives of Earth and Space Scientists, Volume 7, Issue 1, December 2026.
Abstract NASA has led multispectral (≥3 wavelength bands) thermal infrared (TIR) sensor development from the earliest days of the agency. These data are critical in addressing a wide range of scientific questions and administration priories by measuring both temperature (for wildfire and volcanic eruption monitoring, agricultural plant stress, and ...
M. S. Ramsey, K. Cawse‐Nicholson, J. B. Fisher, S. J. Hook, G. C. Hulley, C. M. Lee, M. Silvestri, J. O. Thompson, I. M. Watson   +8 more
wiley   +1 more source

Accretion and Uneven Depletion of the Main Asteroid Belt

The Planetary Science Journal
The main asteroid belt (MAB) is known to be primarily composed of objects from two distinct taxonomic classes, generically defined here as S- and C-complex.
Rogerio Deienno, David Nesvorný, Matthew S. Clement, William F. Bottke, André Izidoro, Kevin J. Walsh   +5 more
doaj   +1 more source

Dust Plumes Induced by a Time‐Varying Electron Beam

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract We present laboratory results to address dust charging and lofting on the Moon and other airless planetary bodies in response to time‐varying solar wind and ultraviolet (UV) exposure. In these experiments, dust is exposed to an electron beam that varies in beam energy between 40 and 260 eV as a function of time.
A. Cabra, X. Wang, M. Horányi
wiley   +1 more source

The Cumulation of Debris Clouds around a Fast-rotating Asteroid

The Astrophysical Journal
The rotational mass loss has been realized to be a prevalent mechanism to produce low-speed debris near the asteroid, and the size composition of the asteroid’s surface regolith has been closely measured by in situ explorations.
Chenyang Huang, Yang Yu, Zhijun Song, Bin Cheng, Patrick Michel, Hexi Baoyin   +5 more
doaj   +1 more source

Technical Challenges and Ethical, Legal and Social Issues (ELSI) for Asteroid Mining and Planetary Defense

Aerospace
Advances in the field of asteroid dynamics continue to yield new knowledge regarding the behavior and characteristics of asteroids, allowing unprecedented levels of accuracy for predicting trajectories and contributing to impact avoidance strategies ...
Evie Kendal, Tony Milligan, Martin Elvis
doaj   +1 more source

An Earth Encounter as the Cause of Chaotic Dynamics in Binary Asteroid (35107) 1991VH

The Planetary Science Journal
Among binary asteroids, (35107) 1991VH stands out as unique given the likely chaotic rotation within its secondary component. The source of this excited dynamical state is unknown. In this work, we demonstrate that a past close encounter with Earth could
Alex J. Meyer, Oscar Fuentes-Muñoz, Ioannis Gkolias, Kleomenis Tsiganis, Petr Pravec, Shantanu Naidu, Daniel J. Scheeres   +6 more
doaj   +1 more source

Earth's Minimoons: Opportunities for Science and Technology

Frontiers in Astronomy and Space Sciences, 2018
Twelve years ago the Catalina Sky Survey discovered Earth's first known natural geocentric object other than the Moon, a few-meter diameter asteroid designated 2006 RH120. Despite significant improvements in ground-based telescope and detector technology
Robert Jedicke, Bryce T. Bolin, William F. Bottke, Monique Chyba, Grigori Fedorets, Mikael Granvik, Mikael Granvik, Lynne Jones, Hodei Urrutxua   +8 more
doaj   +1 more source