Results 21 to 30 of about 1,894,855 (142)

The Oort cloud [PDF]

, 1991
Views of the large-scale structure of the solar system, consisting of the Sun, the nine planets and their satellites, changed when Oort demonstrated that a gigantic cloud of comets (the Oort cloud) is located on the periphery of the solar system.
Marochnik, Leonid S., Mukhin, Lev M., Sagdeev, Roald Z.   +2 more
core  

LOVE IN THE OORT CLOUD

, 2022
LOVE IN THE OORT CLOUD TABLE OF CONTENTS PROLOGUE: July 2022 Mission to Earth Acceptance Letter ii CHAPTER I: The Beginning: August 2019. 1 CHAPTER II: The Prophecy for the Year 2039 16 Including the July 2022 Response from the High Swarm 88 Council ...
Connelly, Rebecca
core   +2 more sources

CYCLOP Revegoca: The First Documented Cyclone Formed From Locally Originating Potential Intensity Over the Southwestern South Atlantic

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 18, 28 September 2026.
Abstract On 9 December 2025, an atypical synoptic cyclone developed near the borders of Paraguay, Argentina, and southern Brazil, triggering severe weather across south‐southeastern Brazil. Unlike typical South Atlantic extratropical cyclones, which intensify near the coast, this system originated inland and underwent explosive cyclogenesis without a ...
M. S. Reboita, L. F. Gozzo, F. Vemado, B. C. Capucin   +3 more
wiley   +1 more source

Biases and Uncertainties in Radiosonde‐Based Precipitable Water Vapor

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Precipitable water vapor (PWV) plays an important role in weather and climate phenomena. Accurate PWV measurements based on radiosonde observations are essential for assessing remote‐sensing measurements and long‐term trends. This study examines the performance of PWV algorithms, including their intrinsic biases and their sensitivity to ...
António P. Ferreira, Cesar Azorin‐Molina, Luis Gimeno   +2 more
wiley   +1 more source

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1994-2015, August 2026.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source

Serendipitous Archival Observations of a New Ultradistant Comet C/2019 E3 (ATLAS)

The Astronomical Journal
We identified a new ultradistant comet C/2019 E3 (ATLAS) exhibiting preperihelion cometary activity at heliocentric distances ≳20 au, making it the fourth member of this population after C/2010 U3 (Boattini), C/2014 UN _271 (Bernardinelli–Bernstein), and
Man-To Hui, Robert Weryk, Marco Micheli, Zhong Huang, Richard Wainscoat   +4 more
doaj   +1 more source

Effects of Comet Encke's Meteoroid Stream on the Seasonal Variation of Mercury's Ca Exosphere

Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.
Abstract Mercury's calcium (Ca) exosphere, observed by NASA's MESSENGER mission, exhibits high temperatures (>50000 K) and pronounced seasonal variability, with its source mainly on the dawn side. Enhanced Ca emission near True Anomaly Angle (TAA) ∼25° and ∼150° has been attributed to Comet 2P/Encke meteoroid streams.
M. Moroni, A. Milillo, A. Mura, A. A. Christou, P. Pokorný, V. Mangano, A. Berezhnoy, A. Aronica, A. Brin, E. De Angelis, P. P. Di Bartolomeo, A. Kazakov, S. Massetti, S. Orsini, C. Plainaki, G. Richards, R. Rispoli, R. Sordini, M. Stumpo   +18 more
wiley   +1 more source

Digital Transformation of Retail Work: The Rise of Chaotic Rationalisation

British Journal of Industrial Relations, Volume 64, Issue 2, Page 378-393, June 2026.
ABSTRACT We examine how new digital technologies are transforming labour processes in frontline jobs in United States (US) store‐based retail, examining the US as an extreme case of labour market liberalisation. Research on technological change presents three scenarios: job displacement, job enrichment and ‘digital Taylorism’ involving heightened ...
Chris Tilly, Françoise Carré
wiley   +1 more source

New Technology and Work: AI and the Coming Struggle to Democratise Work Organisation

Sociology Compass, Volume 20, Issue 6, June 2026.
ABSTRACT This paper explores AI‐related changes at work and considers the adequacy of our conceptual tools in the light of contemporary advances in AI. These considerations raise the question of whether sociologists of work should engage more in advocating for worker voice in technology decision‐making. Using the concept of work organisation, I draw on
Stephen J. Frenkel
wiley   +1 more source

Discovery of a Dwarf Planet Candidate in an Extremely Wide Orbit: 2017 OF201

The Astrophysical Journal Letters
We report the discovery of a dwarf planet candidate, 2017 OF201, currently located at a distance of 90 au. Its orbit is extremely wide and extends to the inner Oort cloud, with a semimajor axis of 830 au and a perihelion of 45 au, precisely determined ...
Sihao Cheng, Jiaxuan Li, Eritas Yang
doaj   +1 more source