Results 111 to 120 of about 1,351,986 (215)

A Fission-Powered Interstellar Precursor Mission [PDF]

open access: yes, 1998
An 'interstellar precursor mission' lays the groundwork for eventual interstellar exploration by studying the interstellar medium and by stretching technologies that have potential application for eventual interstellar exploration.
Wright, Steven A.   +3 more
core  

Astrophysics of the Interstellar Medium

open access: yes, 2013
The space between the stars includes a large variety of objects, where physical processes occur that are fundamental for the structure and evolution of galaxies.
Maciel, Walter J
core   +1 more source

The Implications of ‘Oumuamua on Panspermia

open access: yesThe Astrophysical Journal
Panspermia is the hypothesis that life originated on Earth from the bombardment of foreign interstellar ejecta harboring polyextremophile microorganisms. Since the 2017 discovery of the interstellar body ‘Oumuamua (1I/2017 U1) by the Pan-STARRS telescope,
David Cao   +2 more
doaj   +1 more source

Predicting Interstellar Object Chemodynamics with Gaia

open access: yesThe Astronomical Journal
Abstract The interstellar object (ISO) population of the Milky Way is a product of its stars. However, what is in fact a complex structure in the solar neighborhood has traditionally in ISO studies been described as smoothly distributed.
Hopkins, MJ, Bannister, MT, Lintott, C
openaire   +3 more sources

The Journey of Interstellar Dust

open access: yes, 2007
Interstellar dust particles undergo a complex journey in space. It commences with their formation in stellar outflows or outbursts, but may end in very different ways. Their fates range from sudden "death by destruction" promptly after their formation to
Dwek, Eliahu
core  

Interstellar Objects in the Context of the Milky Way’s Thin and Thick Disks

open access: yes
The division of the Milky Way’s disk into “thin” and “thick” components is a common practice, but one that is often ambiguously defined. The two ways of dividing stars are not equivalent: many stars belonging to the stellar population at high [α/Fe] (the

core   +1 more source

Simulating molecular cloud regulated star formation in Galaxies [PDF]

open access: yes, 2007
This thesis is primarily concerned with understanding the process of galaxy formation via the simulation of the interstellar medium, star formation and supernova feedback.
Booth, Craig Martin
core  

Interstellar objects in a galactic context

open access: yes
Interstellar objects (ISOs) form a vast Galaxy-spanning population with an number density ∼ 1015 pc−3 in the Solar neighbourhood. Though only two members of this population have been observed, 1I/‘Oumuamua and 2I/Borisov, the Vera C. Rubin’s Legacy Survey of Space and Time (LSST) which begins later this year is expected to increase our sample of known ...
openaire   +1 more source

Interstellar Seminar course introduces college students to interstellar studies

open access: yes
Newsletter article in issue 30 of Have Starship, Will Travel, the newsletter of the Interstellar Research Group. It's also called IRG Newsletter.Newsletter archive: https://irg.space/newsletters-have-starship-will ...
Schneegurt, Mark A.
core   +1 more source

Isotopic Fractionation in Interstellar Chemistry [PDF]

open access: yes, 2018
Anomalously fractionated isotopic material is found in many primitive Solar System objects, such as meteorites and comets. It is thought, in some cases, to trace interstellar matter that was incorporated into the Solar Nebula without undergoing ...
Charnley, Steven B.
core  

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