Results 121 to 130 of about 1,351,986 (215)
High-drag Interstellar Objects and Galactic Dynamical Streams
The Astrophysical Journal Letters, 2019 Abstract The nature of 1I/’Oumuamua (henceforth, 1I), the first interstellar object (ISO) known to pass through the solar system, remains mysterious. Feng & Jones noted that the incoming 1I velocity vector “at infinity” ( ) is close to the motion of the Pleiades ...
openaire +2 more sources
Interstellar Comet 3I/ATLAS: Evidence for Galactic Cosmic-Ray Processing
The Astrophysical Journal LettersSpectral observations of 3I/ATLAS (C/2025 N1) with JWST/NIRSpec and SPHEREx reveal an extreme CO _2 enrichment (CO _2 /H _2 O = 7.6 ± 0.3) that is 4.5 σ above solar system comet trends and among the highest ever recorded.
Romain Maggiolo +4 more
doaj +1 more source
A Fission-Powered Interstellar Precursor Mission
, 2009 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.
Lenard, R.X.; Lipinski, R.J.; West, J.L.; Wright, S.A.
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Modeling Rendezvous Trajectories to Objects of Interstellar Origin
The problem of finding a low-cost near-Earth trajectory for a mission to objects of possible interstellar origin is considered. This is formulated by first building a database of distant objects that originate from the Kuiper Belt with a possible link to
Njuguna, Martha
core
, 2023 Since 2017, two macroscopic interstellar objects have been discovered in the inner Solar System, both of which are distinct in nature. The first interstellar object, 1I/`Oumuamua, passed within $\sim63$ lunar distances of the Earth, appeared asteroidal ...
Moro-Martín, Amaya, Seligman, Darryl Z.
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The WIRC+Pol Brown Dwarf Survey: A J-band Polarimetric Survey of 22 Brown Dwarfs
The Astrophysical JournalWe present a near-infrared spectropolarimetric survey of brown dwarfs conducted with the WIRC+Pol instrument on the Palomar 200 inch Hale Telescope. The primary survey goal was to investigate the presence of polarization signatures arising from cloudy ...
Maxwell A. Millar-Blanchaer +16 more
doaj +1 more source
Electrons in the cosmic radiation [PDF]
, 1990 The nature of cosmic ray electrons and their radiation in the Universe has been studied. A convection associated diffusion model is proposed to describe the main characteristics of the large-scale distribution of cosmic ray electrons in the Galaxy: (1) a
Chi, Xinyu, Chi, X
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Combining magnetic and electric sails for interstellar deceleration
, 2016 International audienceThe main benefit of an interstellar mission is to carry out in-situ measurements within a target star system. To allow for extended in-situ measurements, the spacecraft needs to be decelerated.
Hein, Andreas Makoto, Perakis, Nikolaos
core +1 more source
A 6 cm Formaldehyde Line Survey toward WISE Point Sources
The Astrophysical Journal Supplement SeriesWe conducted a 6 cm formaldehyde (H _2 CO) line survey across the northern sky, targeting 3149 high-mass star-forming region candidates selected from the all-sky Wide-field Infrared Survey Explorer (WISE) point-source catalog using the Shanghai TianMa 65
Jun-Ting Liu +8 more
doaj +1 more source
Rendez-vous with massive interstellar objects, as triggers of destabilisation
We study how close passages of interstellar objects of planetary and substellar masses may affect the immediate and long-term dynamics of the Solar system.
Mikryukov, Denis V., Shevchenko, Ivan I.
core +1 more source