Results 271 to 280 of about 52,001 (350)

Prebiotic Investigations and Reaction Network Analysis on the Wöhler‐RNA System

ChemSystemsChem, Volume 8, Issue 2, March 2026.
The prebiotic reaction toward the Wöhler‐RNA, a Proto‐RNA‐candidate, using aldehydes and biuret or triuret results in a mixture of the α‐ and β‐ furanosides and pyranosides. Investigation of the interconversion of these isomers shows different reactivity and stability of the biuret and triuret analogues as well as between the corresponding furanosides ...
Nathalie J. Kurrle, Maximilian Bechtel, Nathalie Hampel, Oliver Trapp   +3 more
wiley   +1 more source

Atomic diffusion and mixing in old stars - VIII. Chemical abundance variations in the globular cluster M4 (NGC 6121). [PDF]

Mon Not R Astron Soc
Nordlander T, Gruyters P, Richard O, Korn AJ.   +3 more
europepmc   +1 more source

A Youthful Titan Implied by Improved Impact Simulations

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract The small number of impact craters found on Titan suggests that its surface is relatively young. Previous work estimated its surface age to be between 200 and 1000 Myr. This estimate, however, is based on crater scaling laws for water and sand, which are not representative of the composition of Titan's icy surface.
S. Wakita, B. C. Johnson, J. M. Soderblom, C. D. Neish   +3 more
wiley   +1 more source

The Cycles and Dynamical Properties of Convective Outbreaks in Jupiter's Highest Speed Jet From a 55‐Year Study

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract Jupiter's most intense jet at planetographic latitude 23.7°N experiences vigorous planetary‐scale disturbances. The onset consists of the outbreak of 1–3 bright clouds of convective origin developing turbulent plumes. Observed events between 1970 and 2025 shows a cycle of activity with a period in the range of 3.8–5.1 yrs interrupted between ...
Agustín Sánchez‐Lavega, José Félix Rojas, Jon Legarreta, Alberto Mendi‐Martos, Ricardo Hueso, Peio Iñurrigarro, Amy A. Simon, Michael H. Wong, Liming Li   +8 more
wiley   +1 more source

Stratified wind from a super-Eddington X-ray binary is slower than expected. [PDF]

Nature
XRISM collaboration.
europepmc   +1 more source

Remote Sensing Sediment–Albedo Feedbacks Affecting Ice Thickness on Taylor Valley Lakes, Antarctica

Geophysical Research Letters, Volume 53, Issue 3, 16 February 2026.
Abstract The McMurdo Dry Valleys are the largest unglaciated region in Antarctica and home to perennially frozen lakes. Thirty years of ice thickness measurements reveal meter‐scale fluctuations over decadal time scales. In this paper, we hypothesize that changing surface sediment dynamics alter ice albedo, changing the heat balance and thickness of ...
C. E. Dougherty, H. A. Dugan, P. T. Doran, L. Zoet, M. Salvatore   +4 more
wiley   +1 more source

The Psyche Gamma-Ray and Neutron Spectrometer. [PDF]

Space Sci Rev
Lawrence DJ, Goldsten JO, Peplowski PN, Burks MT, Cheng S, Cully MJ, Effron JM, Elkins-Tanton LT, Espiritu RC, Fix SG, Graziano MB, Hoffer EM, Jun I, Kim GB, Hines NR, LeBlanc MT, Livingstone EM, Marcotte KM, McCoy TJ, Polanskey CA, Sreekantamurthy M, Yokley ZW.   +21 more
europepmc   +1 more source

Laser Ablation Sampling With Low‐Power Plasma: A LA‐MIP‐MS Instrument for Spaceflight

Rapid Communications in Mass Spectrometry, Volume 40, Issue 3, 15 February 2026.
ABSTRACT Rationale Inductively coupled plasma (ICP) is a commonly used ion source for mass spectrometry‐based chemical analysis of a wide range of materials. Traditional ICP ion sources use high power (> 1000 W) and significant gas flow (> 10 L/min), rendering them unsuitable for spaceflight, as they are too resource‐intensive for planetary spacecraft.
Benjamin J. Farcy, Jacob Graham, Madeline Raith, Ricardo Arevalo Jr., Mazdak Taghioskoui, Sierra Budinoff, Amy McAdam, Jane Lee, Ryan M. Danell, Desmond A. Kaplan, Cynthia Gundersen, William F. McDonough   +11 more
wiley   +1 more source

JWST Detects Silane in a Cold Low-Metallicity World

Faherty J, Meisner A, Burningham B, Visscher C, Suarez G, Gagne J, Merchan SA, Rothermich A, Line M, Burgasser A, Schneider A, Caselden D, Kirkpatrick D, Kuchner M, Gagliuffi DCB, Eisenhardt P, Gelino C, Gonzales E, Marocco F, Leggett S, Lodieu N, Casewell S, Tremblin P, Cushing M, Osorio MRZ, Béjar V, Gauza B, Wright E, Phillips M, Zhang J, Martín E.   +30 more
europepmc   +1 more source

Recent production rates of cosmogenic nuclides in the igneous rocks of Jezero crater floor, Mars. [PDF]

Sci Rep
Zorzano M-, García-Herrera AC, Martín-Torres J.   +2 more
europepmc   +1 more source