Results 61 to 70 of about 2,093,691 (201)

No Evidence for Orbital Clustering in the Extreme Trans-Neptunian Objects

open access: yesThe Planetary Science Journal, 2021
Abstract The apparent clustering in longitude of perihelion ϖ and ascending node Ω of extreme trans-Neptunian objects (ETNOs) has been attributed to the gravitational effects of an unseen 5–10 Earth-mass planet in the outer solar system. To investigate how selection bias may contribute to this clustering, we consider 14 ETNOs discovered ...
Napier, K. J.   +53 more
openaire   +8 more sources

Prominent Mid-infrared Excess of the Dwarf Planet (136472) Makemake Discovered by JWST/MIRI Indicates Ongoing Activity

open access: yesThe Astrophysical Journal Letters
We report on the discovery of a very prominent mid-infrared (18–25 μ m) excess associated with the trans-Neptunian dwarf planet (136472) Makemake. The excess, detected by the Mid-Infrared Instrument of the James Webb Space Telescope, along with previous ...
Csaba Kiss   +20 more
doaj   +1 more source

Pole‐to‐Pole Vertical Ionospheric Profiles at Jupiter From JWST

open access: yesJournal of Geophysical Research: Space Physics, Volume 130, Issue 8, August 2025.
Abstract We present the first pole‐to‐pole observations of Jupiter's ionosphere, capturing dawn and dusk vertical structure up to 5,000 km altitude using the James Webb Space Telescope (JWST), simultaneous to Juno's radio occultation experiments (ROX) in September 2023.
Paola I. Tiranti   +8 more
wiley   +1 more source

38th COSPAR Scientific Assembly 2010

open access: yes, 2010
The 'TNOs are Cool: A Survey of the Trans-Neptunian Region' project is a Herschel Open Time Key Program awarded some 370 h of Herschel observing time. The observations include PACS and SPIRE point-source photometry on about 140 trans-Neptunian objects ...
Mommert, M., Horner, J.
core   +1 more source

A ring system detected around the Centaur (10199) Chariklo [PDF]

open access: yes, 2014
Hitherto, rings have been found exclusively around the four giant planets in the Solar System1. Rings are natural laboratories in which to study dynamical processes analogous to those that take place during the formation of planetary systems and galaxies.
Vanzi, L.   +232 more
core   +1 more source

Orbit of a Possible Planet X

open access: yesThe Astrophysical Journal
The plausibility of an unseen planet in the outer solar system, and the expected orbit and mass of such a planet, have long been a topic of inquiry and debate.
Amir Siraj   +2 more
doaj   +1 more source

Influences of Non‐Oberbeck–Boussinesq Effects on Tracer Transport in Icy Ocean Worlds

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 7, July 2025.
Abstract The subsurface oceans on icy satellites are potentially habitable. To understand their habitability, we need to know how tracers with various lifetimes distribute. Convection is the main vehicle for tracer transport, and we expect convection on icy satellites to differ from regular rotating convection, because as pressure increases, water's ...
Shuang Wang, Wanying Kang
wiley   +1 more source

The dynamical evolution of dwarf planet (136108) Haumea's collisional family: general properties and implications for the trans-Neptunian belt [PDF]

open access: yes, 2012
Recently, the first collisional family was identified in the trans-Neptunian belt (otherwise known as the Edgeworth-Kuiper belt), providing direct evidence of the importance of collisions between trans-Neptunian objects (TNOs). The family consists of the
Mukai, Tadashi   +3 more
core   +1 more source

Is There an Earth-like Planet in the Distant Kuiper Belt?

open access: yesThe Astronomical Journal, 2023
The orbits of trans-Neptunian objects (TNOs) can indicate the existence of an undiscovered planet in the outer solar system. Here we used N -body computer simulations to investigate the effects of a hypothetical Kuiper Belt planet (KBP) on the orbital ...
Patryk Sofia Lykawka, Takashi Ito
doaj   +1 more source

Ceres: Organic‐Rich Sites of Exogenic Origin?

open access: yesAGU Advances, Volume 6, Issue 1, February 2025.
Abstract Ceres, the largest object in the asteroid belt, is the only potential ocean world in the inner Solar System. Previous studies identified deposits of aliphatic organics in and around the Ernutet crater, and at small locations at Inamahari and Urvara craters. The origin of organics, either endogenic or exogenic, in these fresh exposures is still
R. Sarkar   +9 more
wiley   +1 more source

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