Results 51 to 60 of about 1,894,855 (142)
Hadley Cell Instability and Its Link to Tropical Depression‐Type Waves
Geophysical Research Letters, Volume 52, Issue 18, 28 September 2025.Abstract A recent theory proposes that tropical depression (TD)‐type waves grow by flattening the mean meridional moisture gradient, consequently weakening the Hadley Cell through a poleward moisture flux. To evaluate this theory, we investigate the seasonality of TD‐type waves and their relation to the Hadley Cell in ERA5 and Coupled Model ...
Qiao‐Jun Lin +2 more
wiley +1 more source
The Trajectory of 3I/ATLAS Through the Inner Solar System: Close Encounters and Possible Collisions
The Astronomical Journal3I/ATLAS is the third interstellar object (ISO) identified to date. Unlike other known ISOs, 3I/ATLAS travels on a nearly ecliptic, retrograde orbit ( i ≈ 175°).
Anton Pomazan +5 more
doaj +1 more source
Reassessing the Relationship Between Meteor Radio Afterglows and Optical Persistent Trains
Journal of Geophysical Research: Space Physics, Volume 130, Issue 9, September 2025.Abstract Meteor radio afterglows (MRAs) and optical persistent trains (PTs) are two types of long‐lived phenomena which are occasionally observed following the occurrence of a meteor. Both phenomena are thought to be produced by intrinsic emission mechanisms; PTs have been associated with chemiluminescent reactions between meteoric metals and ...
L. E. Cordonnier +5 more
wiley +1 more source
A Case Study of Interstellar Material Delivery: α Centauri
The Planetary Science JournalInterstellar material has been discovered in our solar system, yet its origins and details of its transport are unknown. Here, we present α Centauri as a case study of the delivery of interstellar material to our solar system.
Cole R. Gregg, Paul A. Wiegert
doaj +1 more source
Molecular oxygen in oort cloud comet 1P/Halley [PDF]
, 2015 Recently, the ROSINA mass spectrometer suite on board the European Space Agency's Rosetta spacecraft discovered an abundant amount of molecular oxygen, O2, in the coma of Jupiter family comet 67P/Churyumov-Gerasimenko of O2/H2O = 3.80 ± 0.85%.
Schwehm, G. +6 more
core +3 more sources
Oort Cloud and Long-Period Comets
, 2012 I will summarize recent work on the shape of the Oort spike and dynamical modeling of comet injection from the Oort Cloud. This will highlight the roles of stellar and planetary perturbations together with the Galactic tides.
Rickman, H.,
core
Galactic tide and local stellar perturbations on the Oort cloud: creation of interstellar comets [PDF]
, 2019 Comets in the Oort cloud evolve under the influence of internal and external perturbations, such as giant planets, stellar passages, and the Galactic gravitational tidal field.
S. P. Zwart +7 more
core +1 more source
Context. Recent observations of small Solar System bodies (comets, meteors) showed unexpected evidence of the presence of refractory objects in the Oort cloud.
V. Kuksenko, J. Tóth
core +1 more source
The fading problem and the population of the Oort cloud
, 2006 Context.The discovery efficiency of the dynamically new comets has been assumed to be approximately the same as that of all long-period (LP) comets when estimating the population of the Oort cloud.
L. Neslušan
core +1 more source
The Oort cloud and the motion of the Sun in the Galaxy
, 2011 Workshop program and abstracts available at: http://lal.univ-lille1.fr/oort_workshop_prog.htmlShould the Oort cloud care about how the Solar System moves around the Galaxy?
Mikkola, Seppo +3 more
core +2 more sources