Results 71 to 80 of about 4,285 (205)

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Extreme Negative Polarization of New Interstellar Comet 3I/ATLAS

The Astrophysical Journal Letters
We present the first polarimetric observations of the third discovered interstellar object (ISO), 3I/ATLAS (C/2025 N1, or 3I), obtained preperihelion with FORS2 at the Very Large Telescope, ALFOSC at the Nordic Optical Telescope, and FoReRo2 at the 2 m ...
Zuri Gray, Stefano Bagnulo, Galin Borisov, Yuna G. Kwon, Alberto Cellino, Ludmilla Kolokolova, Rosemary C. Dorsey, Grigori Fedorets, Mikael Granvik, Eric MacLennan, Olga Muñoz, Philippe Bendjoya, Maxime Devogèle, Simone Ieva, Antti Penttilä, Karri Muinonen   +15 more
doaj   +1 more source

Prediscovery Activity of New Interstellar Object 3I/ATLAS: Rapid Brightening from 6 to 4 au

The Astrophysical Journal Letters
We report on the prediscovery observations and constraints of the new interstellar comet 3I/2025 N1 (ATLAS), made by the Zwicky Transient Facility, for the inbound leg of the comet out to a heliocentric distance of r _h  = 17 au, or approximately a year ...
Quanzhi Ye, Michael S. P. Kelley, Henry H. Hsieh, Eric C. Bellm, Tracy X. Chen, Richard Dekany, Andrew Drake, Steven L. Groom, George Helou, Shrinivas R. Kulkarni, Thomas A. Prince, Reed Riddle   +11 more
doaj   +1 more source

Streams of interstellar objects

Upcoming surveys are likely to discover a new sample of interstellar objects (ISOs) within the Solar System, but questions remain about the origin and distribution of this population within the Galaxy. ISOs are ejected from their host systems with a range of velocities, spreading out into tidal streams.
John Forbes, Michele Bannister, Chris Lintott, Angus Forrest, Simon Portegies Zwart, Rosemary Dorsey, Leah Albrow, Matthew Hopkins   +7 more
openaire   +2 more sources

Onset of CN Emission in 3I/ATLAS: Evidence for Strong Carbon-chain Depletion

The Astrophysical Journal Letters
Interstellar objects provide a direct window into the environmental conditions around stars other than the Sun. The recent discovery of 3I/ATLAS, a new interstellar comet, offers a unique opportunity to investigate the physical and chemical properties of
Luis E. Salazar Manzano, Hsing Wen Lin, Aster G. Taylor, Darryl Z. Seligman, Fred C. Adams, David W. Gerdes, Thomas Ruch, Tessa T. Frincke, Kevin J. Napier   +8 more
doaj   +1 more source

Massive Star Formation in the Tarantula Nebula

The Astrophysical Journal, 2023
In this work, we present 299 candidate young stellar objects (YSOs) in 30 Doradus discovered using Spitzer and Herschel point-source catalogs, 276 of which are new.
Omnarayani Nayak, Alex Green, Alec S. Hirschauer, Rémy Indebetouw, Margaret Meixner, Tony Wong, Mélanie Chevance, Guido De Marchi, Vianney Lebouteiller, Min-Young Lee, Leslie W. Looney, Suzanne C. Madden, Julia Roman-Duval, Yasuo Fukui, Alvaro Hacar, K. E. Jameson, Venu Kalari, Luuk Oudshoorn, Mónica Rubio, Elena Sabbi   +19 more
doaj   +1 more source

Diffuse interstellar bands in the spectra of Herbig Ae/Be stars and related objects

, 2003
We report a detection of weak diffuse interstellar bands (DIBs) in the close vicinity of 6 Herbig Ae/Be pre-main sequence stars. A common feature of these objects is the presence of a dusty shell where DIB carriers are apparently formed/destroyed.
G. A. Galazutdinov, O. A. Galazutdinova, V. P. Grinin   +2 more
core   +1 more source

Geometric Stabilization of Biomolecular Chirality in Open Systems

Chirality, Volume 38, Issue 6, June 2026.
Entropic topology favors orientation‐preserving deformations in molecular configuration space, leading to a spontaneous statistical bias toward right‐handed α$$ \alpha $$‐helices. The figure illustrates how configurations with positive determinant (dextral) occupy a larger accessible volume of microstates, providing a purely geometric‐entropic ...
Vicente Domínguez‐Arca
wiley   +1 more source

Postperihelion Optical Low-resolution Spectroscopy of Interstellar Comet 3I/ATLAS

The Astrophysical Journal Letters
3I/ATLAS is the third interstellar object discovered on UT 2025 July 1, when it was inbound at a heliocentric distance of r _h  = 4.51 au. Preperihelion optical spectroscopic observations at r _h < 3 au suggested that 3I/ATLAS resembled “carbon-chain ...
Hideyo Kawakita, Ko Tsujimoto, Yoshiharu Shinnaka, Hitomi Kobayashi, Takafumi Ootsubo, Jun-ichi Watanabe   +5 more
doaj   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, Volume 43, Issue 4, Page 2553-2584, June 2026.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source