Results 131 to 140 of about 56,805 (216)

On the helium abundance of Nova Cephei 1971 ejecta [PDF]

, 1979
J. A. de Freitas Pacheco
openalex   +1 more source

Statistical Methods for Interpreting Spatial and Temporal Heterogeneity of Martian Tropical Water Ice Informed by Properties of Crater Ejecta Types

Earth and Space Science
The martian tropical water ice spatial and temporal distribution was characterized using impact crater ejecta type, location, size, and age in one of two epochs, ≤3.4 Ga and >3.4 Ga, using statistical models designed for spatial and temporal correlation ...
Jamie D. Riggs, Michelle R. Kirchoff
doaj   +1 more source

Explosive volcanic eruptions - VI. Ejecta dispersal in plinian eruptions: the control of eruption conditions and atmospheric properties [PDF]

, 1987
Lionel Wilson, George P. L. Walker
openalex   +1 more source

Contemporaneous formation of self-secondaries and layered ejecta deposits on Mars

Communications Earth & Environment
Self-secondaries are secondary craters formed in cogenetic ejecta deposits. Bearing important information on cratering mechanics and the applicability of remote age-determination technique using crater statistics, the spatial distribution of self ...
Fanglu Luo, Zhiyong Xiao, Rui Xu, Yizhen Ma, Yiren Chang, Wei Cao, Yichen Wang, Jun Cui   +7 more
doaj   +1 more source

Pseudomyrma ejecta

14. Pseudomyrma ejecta. Worker. Length 1 1/2 line.-Rufo-testaceous, smooth and shining: the head, hinder part of the thorax, femora and tibiae, darker-coloured; abdomen blackish-brown; the thorax strangulated in the middle, the first node of the petiole subelongate, a minute tooth at the base of the petiole beneath, both the nodes rufo-testaceous; the ...
openaire   +2 more sources

On the possibility of dust condensation in the ejecta of supernova 1987a [PDF]

, 1987
R. D. Gehrz, E. P. Ney
openalex   +1 more source

Confirmation of dust condensation in the ejecta of supernova 1987a. [PDF]

, 1990
R. D. Gehrz, E. P. Ney
openalex   +1 more source

DART Impact Ejecta Plume Evolution: Implications for Dimorphos

The Planetary Science Journal
The NASA Double Asteroid Redirection Test (DART) spacecraft impacted the moon Dimorphos of the [65803] Didymos binary system and changed the binary orbit period, demonstrating asteroid deflection by a kinetic impact and indicating that more momentum was ...
Andrew F. Cheng, S. D. Raducan, M. Jutzi, T. L. Farnham, E. Dotto, V. Della Corte, E. Mazzotta Epifani, A. Rossi, I. Gai, J. Deshapriya, P. Hasselmann, I. Bertini, A. Zinzi, S. Ivanovski, J. Brucato, Giovanni Poggiali, A. Lucchetti, M. Pajola, G. Zanotti, M. Amoroso, A. Capannolo, G. Cremonese, M. Dall’Ora, S. Ieva, G. Impresario, M. Lavagna, D. Modenini, P. Palumbo, D. Perna, S. Pirrotta, P. Tortora, M. Zannoni   +31 more
doaj   +1 more source

Chemical Routes to Dust Formation in the Ejecta of Novae [PDF]

, 1990
J. M. C. Rawlings, D. A. Williams
openalex   +1 more source

Minimum velocity for impact ejecta to form secondaries on terrestrial bodies

Communications Earth & Environment
The minimum velocity (v) for impact ejecta to form secondary craters (secondaries) remains enigmatic, but it is a crucial parameter in untangling the fate of impact ejecta on planetary surfaces.
Rui Xu, Zhiyong Xiao, Yichen Wang, Fanglu Luo, Yizhen Ma   +4 more
doaj   +1 more source