Results 31 to 40 of about 13,022 (190)

Stability of a Rotating Asteroid Housing a Space Station

Frontiers in Astronomy and Space Sciences, 2019
Today there are numerous studies on asteroid mining. They elaborate on selecting the right objects, prospecting missions, potential asteroid redirection, and the mining process itself.
Thomas I. Maindl, Roman Miksch, Birgit Loibnegger   +2 more
doaj   +1 more source

Collisional and Rotational Disruption of Asteroids [PDF]

Advanced Science Letters, 2011
Asteroids are leftover pieces from the era of planet formation that help us understand conditions in the early Solar System. Unlike larger planetary bodies that were subject to global thermal modification during and subsequent to their formation, these small bodies have kept at least some unmodified primordial material from the solar nebula.
Walsh, K., Michel, P., Richardson, D.
openaire   +3 more sources

YORP and Yarkovsky effects in asteroids (1685) Toro, (2100) Ra-Shalom, (3103) Eger, and (161989) Cacus

, 2017
The rotation states of small asteroids are affected by a net torque arising from an anisotropic sunlight reflection and thermal radiation from the asteroids' surfaces. On long timescales, this so-called YORP effect can change asteroid spin directions and
Ayvazian, V. R., Chiorny, V. G., Durech, J., Farnocchia, D., Fatka, P., Gaftonyuk, N., Galad, A., Groom, R., Hanus, J., Hornoch, K., Inasaridze, R. Y., Krugly, Yu. N., Kucakova, H., Kusnirak, P., Kvaratskhelia, O. I., Lehky, M., Masi, G., Molotov, I. E., Oey, J., Pollock, J. T., Pravec, P., Shevchenko, V. G., Vokrouhlicky, D., Vrastil, J., Warner, B. D.   +24 more
core   +1 more source

Nucleus of active asteroid 358P/Pan-STARRS (P/2012 T1)

, 2018
The dust emission from active asteroids is likely driven by collisions, fast rotation, sublimation of embedded ice, and combinations of these. Characterising these processes leads to a better understanding of their respective influence on the evolution ...
Agarwal, Jessica, Mommert, Michael
core   +1 more source

An Efficient Numerical Approach to Modeling the Effects of Particle Shape on Rubble-pile Dynamics

The Planetary Science Journal, 2023
We present an approach for the inclusion of nonspherical constituents in high-resolution N -body discrete element method (DEM) simulations. We use aggregates composed of bonded spheres to model nonspherical components.
Julian C. Marohnic, Joseph V. DeMartini, Derek C. Richardson, Yun Zhang, Kevin J. Walsh   +4 more
doaj   +1 more source

Performance Constraints of All‐Perovskite Tandem Solar Cells in Low‐Intensity, Low‐Temperature Environments

Advanced Materials, EarlyView.
All‐perovskite tandem solar cells are evaluated under low‐intensity and low‐temperature (LILT) conditions relevant to space environments. Distinct loss regimes emerge, where weaker entropic mixing causes halide segragation below ≈240 K going along with a strong current imbalance, while poor electron transport in C60 dominates.
Sercan Ozen, Etienne Beier, Francisco Peña‐Camargo, Jarla Thiesbrummel, Gianluca Boccarella, Paria Forozi Sowmeeh, Martin Stolterfoht, Dieter Neher, Kai Oliver Brinkmann, Thomas Riedl, Felix Lang   +10 more
wiley   +1 more source

Optimized Asteroid Rotation and Shape Modeling through an Integrated Shape-from-silhouette and Optical Flow Approach

The Astronomical Journal
Asteroids offer valuable insights into the formation and evolution of the solar system. Understanding their rotation and shape is essential for studying asteroid collision histories and geological processes, as well as for planning exploration missions ...
Yi Liu, Bo Wu, Hongliang Li
doaj   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Near-Earth asteroid (3200) Phaethon. Characterization of its orbit, spin state, and thermophysical parameters

, 2016
The near-Earth asteroid (3200) Phaethon is an intriguing object: its perihelion is at only 0.14 au and is associated with the Geminid meteor stream.
Ali-Lagoa, V., Bolin, B., Delbo, M., Devogele, M., Dyvig, R., Emery, J. P., Galad, A., Hanus, J., Jedicke, R., Kornos, L., Kusnirak, P., Licandro, J., Pravec, P., Reddy, V., Rivet, J-P., Vilagi, J., Vokrouhlicky, D., Warner, B. D.   +17 more
core   +1 more source

Rotation Periods of Asteroids Determined With Bootstrap Convex Inversion From ATLAS Photometry

Frontiers in Astronomy and Space Sciences, 2022
The rotation period is one of the fundamental physical characteristics of asteroids. It can be determined from photometric measurements by standard methods of time-series period analysis or by creating a physical model of an asteroid with the rotation ...
Josef Ďurech, Michael Vávra, Radim Vančo, Nicolas Erasmus   +3 more
doaj   +1 more source