Results 21 to 30 of about 2,103,717 (319)
Symposium - International Astronomical Union, 1972 The evolution of the solar system is surveyed, it being presumed that the Sun, Jupiter, and Saturn formed rather quickly and essentially with the composition of the original collapsing cloud of dust and gas. Just as the refractory material of the cloud is considered to have formed into planetesimals, from which the terrestrial planets collected, so is ...
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The Carbon Monoxide Abundance in Comet 103P/Hartley during the EPOXI Flyby
, 2011 We report the detection of several emission bands in the CO Fourth Positive Group from comet 103P/Hartley during ultraviolet spectroscopic observations from the Hubble Space Telescope (HST) on 2010 November 4 near the time of closest approach by NASA's ...
A'Hearn, M. F. +4 more
core +1 more source
, 2015 Context. The Rosetta spacecraft is escorting comet 67P/Churyumov-Gerasimenko from a heliocentric distance of >3.6 AU, where the comet activity was low, until perihelion at 1.24 AU. Initially, the solar wind permeates the thin comet atmosphere formed from
H. Nilsson +30 more
semanticscholar +1 more source
Effects of the Planar Galactic Tides and Stellar Mass on Comet Cloud Dynamics
, 2009 We report the first results of a research program to explore the sensitivity of the orbits of Oort cloud comets to changes in the strength of the Galactic tides in the plane of the disk and also to changes in the mass of the host star.
Gonzalez, Guillermo +2 more
core +1 more source
The Astrophysical Journal LettersWe report Very Large Telescope spectroscopy of the interstellar comet 3I/Asteroid Terrestrial-impact Last Alert System (C/2025 N1), from r _h ≃ 4.4 to 2.85 au, using X-Shooter (300–550 nm, R ≃ 3000) and the Ultraviolet and Visual Echelle Spectrograph ...
Rohan Rahatgaonkar +27 more
doaj +1 more source
Infrared Nanocrystals for Space Application: Hardness to Irradiations
Advanced Functional Materials, EarlyView.This article investigates infrared HgTe nanocrystals under X‐ray and ion irradiation, revealing remarkable radiation hardness. It uncovers distinct degradation mechanisms and shows that the nanomaterial outperforms integrated electronics. The results position colloidal nanocrystals as promising candidates for resilient space and harsh‐environment ...
Alexandre Neyret +22 more
wiley +1 more source
Spectral Characteristics of Interstellar Object 3I/ATLAS from SOAR Observations
The Astrophysical Journal LettersInterstellar objects (ISOs) provide unique insights into the building blocks and conditions of extrasolar planetary systems. The newly discovered object, 3I/ATLAS (C/2025 N1), represents the third known ISO after 1I/’Oumuamua and 2I/Borisov.
Thomas H. Puzia +4 more
doaj +1 more source
Earth and Planetary Science Letters, 2021 Anhydrous interplanetary dust particles (IDPs) collected from Earth's stratosphere are the most primitive extraterrestrial materials that likely are the remnants of major building blocks of our solar system.
Mingming Zhang +7 more
semanticscholar +1 more source
Advanced Healthcare Materials, EarlyView.Machine learning–guided engineering of a plectasin‐derived peptide yields DC05, a potent antimycobacterial candidate. Encapsulation into tuftsin‐functionalized mesoporous silica nanoparticles enhances intracellular delivery, stability, and activity against Mycobacterium tuberculosis while maintaining low cytotoxicity and minimal hemolysis. The combined
Christian S. Carnero Canales +12 more
wiley +1 more source
Hubble Space Telescope Observations of the Interstellar Interloper 3I/ATLAS
The Astrophysical Journal LettersWe present high-angular-resolution observations of the third known interstellar interloper, 3I/ATLAS, from the Hubble Space Telescope. The object is clearly active at 3.8 au preperihelion, showing dust emitted from the hot, Sun-facing side of the nucleus
David Jewitt +4 more
doaj +1 more source