Results 11 to 20 of about 113,206 (352)
CO and CO2 Productions Rates of Comets Observed by NEOWISE within Year 1 of the Reactivated Mission
The Planetary Science Journal, 2023 We report on the observed fluxes of the comets detected by NEOWISE during the first year of operations after the spacecraft’s reactivation. The sample included 57 comets.
Adeline Gicquel +4 more
doaj +1 more source
Use of lung ultrasound in the differential diagnosis of the causes of dyspnea [PDF]
Vojnosanitetski Pregled, 2023 Background/Aim. The field of lung ultrasonography (US) is a fast-developing one, and it provides the medical community with numerous new diagnostic opportunities.
Bulatović Kristina +11 more
doaj +1 more source
Organic Matter in Cometary Environments
Life, 2021 Comets contain primitive material leftover from the formation of the Solar System, making studies of their composition important for understanding the formation of volatile material in the early Solar System.
Adam J. McKay, Nathan X. Roth
doaj +1 more source
Possible Transfer of Life by Earth-Grazing Objects to Exoplanetary Systems
Life, 2020 Recently, a 30-cm object was discovered to graze the Earth’s atmosphere and shift into a Jupiter-crossing orbit. We use the related survey parameters to calibrate the total number of such objects.
Amir Siraj, Abraham Loeb
doaj +1 more source
Universe, 2022 Questions regarding how primordial or pristine the comets of the solar system are have been an ongoing controversy. In this review, we describe comets’ physical evolution from dust and ice grains in the solar nebula to the contemporary small bodies in ...
Jürgen Blum +2 more
doaj +1 more source
Impacts drive lunar rockfalls over billions of years
Nature Communications, 2020 In this study, the authors present a global map of rockfalls on the lunar surface and determine impact events as short- and long-term driver for rockfall events.
Valentin Tertius Bickel +4 more
doaj +1 more source
Activity of 50 Long-Period Comets Beyond 5.2 AU [PDF]
, 2016 Remote investigations of the ancient solar system matter has been traditionally carried out through the observations of long-period (LP) comets that are less affected by solar irradiation than the short-period counterparts orbiting much closer to the Sun.
Csak, B. +12 more
core +3 more sources
General Relativistic Study of Motion of Comets Particles Elliptical Gravitational Field [PDF]
Physics AccessComets are small bodies consisting of aggregates of ice mixed with rock and dust. They are usually influenced by galactic forces and stellar encounters, and may have contributed to the formation of ice giants and transport gases across the solar system ...
Timothy Bulus +3 more
doaj +1 more source
Galilæana, 2023 While studying the controversy between Galileo and the Jesuits over the comets of 1618, historians tend to focus on the works that led to the publication of Il Saggiatore in 1623.
Luís Miguel Carolino
doaj +1 more source
Where do long-period comets come from? 26 comets from the non-gravitational Oort spike [PDF]
, 2010 The apparent source region (or regions) of long-period comets as well as the definition of the dynamically new comet are still open questions.The aim of this investigation is to look for the apparent source of selected long period comets and to refine ...
Biver +32 more
core +1 more source