Results 81 to 90 of about 131,137 (325)

The dynamics of asteroid rotation, governed by YORP effect: the kinematic ansatz

, 2018
The main motivation of this research is the analytical exploration of the dynamics of asteroid rotation when it moves in elliptic orbit through Space.
Ershkov, Sergey V., Shamin, Roman V.
core   +1 more source

Thermochemical equilibrium calculations of high-temperature O2 generation on the early Earth: Giant asteroid impacts on land [PDF]

Journal of the Serbian Chemical Society, 2003
Earth’s atmosphere is composed primarily of N2 and O2. The origin of free O2 in the early Earth’s atmosphere is still subject of considerable debate.1 Theoretical models suggest that the initial form of free O2 in the atmosphere has been oceanic H2O ...
PAVLE I. PREMOVIC
doaj  

Xyloplax princealberti (Asteroidea, Echinodermata): A New Species That Is Not Always Associated with Wood Falls

Diversity, 2023
Xyloplax is a genus of three species of sea stars previously found only on sunken wood in the deep ocean. Their circular and petaloid bodies, which lend them their common name “sea daisy”, and their presumed exclusive diet of wood make them an unusual ...
Cheyenne Y. Payne, Ekin Tilic, Rachel E. Boschen-Rose, Amanda Gannon, Josefin Stiller, Avery S. Hiley, Benjamin M. Grupe, Christopher L. Mah, Greg W. Rouse   +8 more
doaj   +1 more source

Heterogeneous mass distribution of the rubble-pile asteroid (101955) Bennu

Science Advances, 2020
The asteroid (101955) Bennu has a heterogeneous internal mass distribution with an underdense center and equatorial bulge. The gravity field of a small body provides insight into its internal mass distribution.
D. Scheeres, A. French, P. Tricarico, S. Chesley, Y. Takahashi, D. Farnocchia, J. McMahon, D. Brack, A. Davis, R. Ballouz, E. Jawin, B. Rozitis, J. Emery, A. Ryan, R. Park, B. Rush, N. Mastrodemos, B. Kennedy, J. Bellerose, D. Lubey, D. Velez, Andrew T. Vaughan, J. Leonard, J. Geeraert, B. Page, P. Antreasian, E. Mazarico, K. Getzandanner, D. Rowlands, M. Moreau, J. Small, D. Highsmith, S. Goossens, S. Goossens, E. Palmer, J. Weirich, R. Gaskell, O. Barnouin, M. Daly, J. Seabrook, M. A. Asad, L. Philpott, C. Johnson, C. Johnson, C. Hartzell, V. Hamilton, P. Michel, K. Walsh, M. Nolan, D. Lauretta   +49 more
semanticscholar   +1 more source

Compact Spectral Imaging: A Review of Miniaturized and Integrated Systems

Laser &Photonics Reviews, EarlyView.
This review explores the rapid shift toward compact spectral imaging systems by examining four key design paradigms: Do‐It‐Yourself (DIY) platforms, freeform optics, filter‐on‐chip integration, and multifunctional metasurfaces. The discussion highlights critical applications in medicine, agriculture, and environmental monitoring, providing comparative ...
Sani Mukhtar, Amir Arbabi, Jaime Viegas
wiley   +1 more source

Rotationally Resolved Spectroscopy of Asteroid Pairs: No Spectral Variation Suggests Fission is followed by Settling of Dust

, 2014
We examine the spectral properties of asteroid pairs that were disrupted in the last 2 Myrs to examine whether the site of the fission can be revealed.
Binzel, Richard P., DeMeo, Francesca, Moskovitz, Nicholas, Polishook, David   +3 more
core   +1 more source

Massenbegriffe auf dem Prüfstand: Die drei Facetten der Masse

Physik in unserer Zeit, EarlyView.
Masse ist die primäre Eigenschaft, die man physikalischen Körpern zuordnet. Da die Masse verschiedene Rollen übernimmt – so reagiert sie nicht nur auf ein Gravitationsfeld, sie erzeugt auch eines –, müssen diese verschiedenen Rollen und darauf aufbauend die verschiedenen Massenbegriffe genauer analysiert werden.
Eva Hackmann, Claus Lämmerzahl
wiley   +1 more source

Consequences of asteroid fragmentation during impact hazard mitigation [PDF]

, 2009
The consequences of the fragmentation of an Earth-threatening asteroid due to an attempted deflection are examined in this paper. The minimum required energy for a successful impulsive deflection of a threatening object is computed and compared to the ...
Davis D. R., G. Radice, Gault D. E., Goldstein H., Harris A. W., J. P. Sanchez, M. Vasile, Melosh H. J., Stokes G. H.   +8 more
core   +1 more source

Iron whiskers on asteroid Itokawa indicate sulfide destruction by space weathering

Nature Communications, 2020
Extraterrestrial iron sulfide is a major mineral reservoir of the cosmochemically and astrobiologically important elements iron and sulfur. Sulfur depletion on asteroids is a long-standing, yet unresolved phenomenon that is of fundamental importance for ...
T. Matsumoto, D. Harries, F. Langenhorst, A. Miyake, T. Noguchi   +4 more
semanticscholar   +1 more source

The empty primordial asteroid belt [PDF]

Science Advances, 2017
The asteroid belt may be a cosmic refugee camp that formed empty but was populated by objects from across the solar system. The asteroid belt contains less than a thousandth of Earth’s mass and is radially segregated, with S-types dominating the inner ...
S. Raymond, A. Izidoro
semanticscholar   +1 more source