Results 21 to 30 of about 24,316 (300)

Monte Carlo Models of Comet Dust Tails Observed from the Ground

open access: yesUniverse, 2022
Dust particles leaving the comet nucleus surface are entrained by the gas within the first few nuclear radius distances and are subjected to a complex hydrodynamical environment.
Fernando Moreno
doaj   +1 more source

MUPUS insertion device for the Rosetta mission

open access: yesJournal of Telecommunications and Information Technology, 2023
An original mechanical device designed to insert a penetrator into a cometary nucleus in an almost gravityfree environment is described. The device comprises a hammer and a power supply system that stores electrical energy in a capacitor.
Jerzy Grygorczuk   +3 more
doaj   +1 more source

The activity characteristics and mechanisms of long-period comets

open access: yesEarth and Planetary Physics
Comets are small celestial bodies orbiting around the Sun. They are remnants left over from the formation of the solar system; their interiors store original material of the planetary disk within the solar system. They are thus "fossils" for studying the
YingQi Wu   +3 more
doaj   +1 more source

Comet Pond II: Synergistic Intersection of Concentrated Extraterrestrial Materials and Planetary Environments to Form Procreative Darwinian Ponds

open access: yesLife, 2018
In the “comet pond” model, a rare combination of circumstances enables the entry and landing of pristine organic material onto a planetary surface with the creation of a pond by a soft impact and melting of entrained ices.
Benton C. Clark, Vera M. Kolb
doaj   +1 more source

Evidence for geologic processes on comets [PDF]

open access: yes, 2016
Spacecraft missions have resolved the nuclei of six periodic comets and revealed a set of geologically intriguing and active small bodies. The shapes of these cometary nuclei are dominantly bilobate reflecting their formation from smaller cometesimals ...
Farnham, T.L.   +7 more
core   +2 more sources

Comets of the Marsden and Kracht groups

open access: yesOpen Astronomy, 2018
Perihelion distances of Marsden and Kracht group comets fall into the range 6RS < q < 12RS (the Meyer group comets also share the same perihelion interval).
Kalinicheva Olga V.
doaj   +1 more source

Predictions of the solar wind interaction with Comet Grigg-Skjellerup [PDF]

open access: yes, 1992
The planned encounter of the Giotto spacecraft with comet Grigg-Skjellerup on 10th July 1992 promises to extend our knowledge of the solar wind interaction with comets substantially.
Johnstone, AD   +2 more
core  

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