Results 81 to 90 of about 86,059 (172)
Comet: An internet based platform for education in measurement [PDF]
, 2005 The project COMET provides a multimedia training package for metrology and measurement. The package is developed by a consortium of 10 institutes from 7 European countries.
Regtien, Paulus P.L. +4 more
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The Astronomical JournalComet C/2017 K2 (Pan-STARRS) provided a rare opportunity to investigate the evolution of coma composition and outgassing patterns over a transitional heliocentric distance ( R _h ) range where activity drivers in comets are thought to change from ...
Chemeda Ejeta +13 more
doaj +1 more source
Baroclinic Vortex Generation by a Comet Shoemaker-Levy 9 Impact
, 1997 "Impact of Shoemaker-Levy 9 caused various changes on Jupiter. One of them is the comet impact sites left on the surface of Jupiter. These impact sites were very stable and long-1ived, which is a mystery worthy for detailed investigation.
Tajima, M.", Yabe, T., "Matsunaga, E.
core
On the Early Thermal Processing of Planetesimals during and after the Giant Planet Instability
The Planetary Science JournalBorn as ice-rich planetesimals, cometary nuclei were gravitationally scattered onto their current orbits in the Kuiper Belt and the Oort Cloud during the giant planets’ dynamical instability in the early stages of our solar system’s history.
Anastasios Gkotsinas +4 more
doaj +1 more source
The Planetary Science JournalWe present measurements, analyses, and results for the 17 strongly carbon-chain depleted comets in Lowell Observatory’s narrowband photometry database.
Allison N. Bair, David G. Schleicher
doaj +1 more source
The Astrophysical Journal LettersComets are frozen remnants of our solar system’s formation, and comparing their chemical composition to that of planet-forming systems can reveal crucial insights about our origins, potentially answering one of the most challenging questions in planetary
Manuela Lippi +7 more
doaj +1 more source
The Planetary Science JournalConventional narrowband photoelectric photometry of Comet Hale–Bopp (1995 O1) was obtained on 99 nights from mid-1995 to early-2000, yielding gas and dust production rates over an unprecedented range of time and distance. The appearance of Hale–Bopp (H-B)
David G. Schleicher +3 more
doaj +1 more source
The Cosmic Sulfur Depletion Problem Extends to Interstellar Object 3I/ATLAS
The Astrophysical Journal LettersConstraining the sulfur reservoirs of interstellar objects provides essential clues to the nature of sulfur species in protoplanetary disks and interstellar molecular clouds and a potential solution to the cosmic sulfur depletion problem. Observations of
John W. Noonan +9 more
doaj +1 more source
Water isotopes and hydronium in the evolving coma of 67P
Astronomy & AstrophysicsContext. Cometary isotopes preserve key information about the early Solar System and its presolar heritage. Rosetta’s long-term in situ observations of comet 67P/Churyumov–Gerasimenko offered the first opportunity to examine isotopic variability within a
Müller D. R. +9 more
doaj +1 more source
The Planetary Science JournalThe 2023 perihelion passage of comet C/2022 E3 (ZTF) afforded an opportunity to measure the abundances and spatial distributions of coma volatiles in an Oort cloud comet at high spatial resolution near its close approach to Earth ( ${{\rm{\Delta }}}_ ...
Nathan X. Roth +11 more
doaj +1 more source