Essays about: "Main Asteroid Belt"

Found 4 essays containing the words Main Asteroid Belt.

1. 1. Hunting for Planet Nine by its perturbations on the Main Asteroid Belt

   University essay from Lunds universitet/Astronomi - Genomgår omorganisation

   Author : Albin Jonsson; [2019]
   Keywords : Planet Nine; Main Asteroid Belt; Perturbations; evection resonance; libration; Physics and Astronomy;

   Abstract : In recent years, scientists have found unconfirmed evidence for a ninth planet in the solar system at a very wide orbit. The parameters for this planet are poorly constrained. Current estimates mostly come from the effect the planet has on trans-neptunian objects. READ MORE

3. 2. Chrome spinel grains from the Komstad Limestone Formation, Killeröd, southern Sweden : a high-resolution study of an increased meteorite flux in the Middle Ordovician

   University essay from Lunds universitet/Geologiska institutionen

   Author : Ellinor Martin; [2014]
   Keywords : chrome spinel; fossil meteorites; Komstad Limestone; winonaites; Middle Ordovician; carbonate sedimentology; Earth and Environmental Sciences;

   Abstract : I mellersta ordovicium var inflödet av kosmiskt material till jorden högre än idag, i sviter-na efter uppbrytningen av den L-kondritiska asteroidkroppen i asteroidbältet mellan Mars och Jupiter, vilket beri-kade den forna havsbottnen med meteoriter och kosmiskt damm. Komstadformationen i Killeröd, Skåne, innehåller ett lager särskilt rikt på L-kondritiska kromitkorn vilket indikerar en hög grad av kondensation. READ MORE

4. 3. Variations in impactor flux to the Moon and Earth after 3.85 Ga

   University essay from Lunds universitet/Geologiska institutionen

   Author : Sanna Holm; [2008]
   Keywords : the Moon; impact crater; impactor flux; OMAT-profile; månen; impaktkrater; impaktfrekvens; OMAT-profil; Earth and Environmental Sciences;

   Abstract : An impact crater is the result of a collision between a large and a smaller body. On Earth most of the cratering record has been erased because of tectonic processes and weathering. The Moon, however, displays a nearly complete record of impact events over the last 2 Gyr, and evidence of impact cratering events nearly 4 billion years old. READ MORE

5. 4. Titanium- and chromium-rich opaque minerals in condensed sediments : chondritic, lunar and terrestrial origins

   University essay from Lunds universitet/Geologiska institutionen

   Author : Sanna Holm; [2008]
   Keywords : Ilmenite; chrome spinel; 3He; lunar impact ejecta; source rock; Middle Ordovician; Late Eocene; ilmenit; kromspinell; impakt ejekta; källbergart; mellanordovicium; sen eocen; Earth and Environmental Sciences;

   Abstract : Evidence from terrestrial sedimentary successions indicate that the amount of extraterrestrial material reaching Earth is not constant, but has been increased during parts of the Phanerozoic. An increase in the flux of extraterrestrial material to Earth has been proposed for the Middle Ordovician and the Late Eocene. READ MORE