Results 71 to 80 of about 2,956 (261)
Hydrogen Cyanide in Comet C/2022 E3 (ZTF) from 3.4 mm Wave Spectra
The Astronomical JournalThe composition inside a comet nuclear can be detected through the molecular rotational emission lines at millimeter or submillimeter wavelengths.
Juncen Li +3 more
doaj +1 more source
Nongravitational perturbations of long-period comets
The Astronomical Journal, 1979 The model of Marsden et al. (1973) is used to investigate the effect of nongravitational forces resulting from water ice sublimation on the orbits of long-period comets. The orbits of hypothetical comets with perihelion distances of 0.005 to 4 AU are integrated numerically along initially parabolic trajectories through one perihelion passage for ...
openaire +1 more source
Knee Surgery, Sports Traumatology, Arthroscopy, EarlyView.Abstract The integration of artificial intelligence (AI)‐equipped tools into electronic health record (EHR) platforms may drive the evolution of orthopaedic diagnosis and decision‐making, leveraging big data to generate precise and context‐aware insights.
Alexander M. Bouterse +7 more
wiley +1 more source
Early CN Outgassing and Production Rates of C/2024 E1 (Wierzchos) at 4 au
The Planetary Science JournalThe study of cometary activity at large heliocentric distances provides insights into the volatile release processes in the outer solar system. Early models predicted cometary activity was driven primarily by sublimation of water and therefore would ...
A. C. Mura +8 more
doaj +1 more source
The young long-period comet family of Saturn [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 The distributions of long-period comets with respect to the minimum distance Δ between their orbits and the orbit of Saturn or Jupiter, constructed by Konopleva using data up to 1972, exhibit a sharp peak at ...
openaire +1 more source
A Sub‐Microsecond Switch Enabling SWIFT 23Na Imaging at 10.5 T
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To enable sodium SWIFT imaging, which is a zero‐echo time imaging technique, at ultra‐high magnetic fields through the development of custom electronics hardware, and to showcase this capability with in vivo imaging results. Methods The custom hardware developed consists of a high‐speed optical trigger with 10 ns resolution, an in‐bore
Russell L. Lagore +10 more
wiley +1 more source
Approach to exploring interstellar objects and long-period comets [PDF]
, 2019 This paper aims to identify the best approaches for exploring planetary bodies with very long orbital periods, i.e., bodies that approach Earth only once in a lifetime.
Castillo-Rogez, Julie C. +3 more
core
Multiple Outbursts of Halley-type Comet 12P/Pons–Brooks
The Astronomical JournalWe present optical observations of the Halley-type comet 12P/Pons–Brooks (12P) on its approach to perihelion. The comet was active even in the first observations at ∼8 au.
David Jewitt, Jane Luu
doaj +1 more source
Journal of Field Robotics, EarlyView.ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang +3 more
wiley +1 more source
Mammalian Osteoderm Ultrastructure in the Armored Acomys Spiny Mouse Tail
Small, EarlyView.The ultrastructure of armored platelets – termed osteoderms – in the tail skin of Acomys cahirinus spiny mice is characterized using 2D and 3D microscopy methods. The imbricated structure is composed of calcium phosphate biomineral and has select structural elements that are bone‐like and tooth‐like in nature.
Joseph Deering +2 more
wiley +1 more source