Results 1 to 10 of about 3,949,170 (113)

Seizing opportunities and navigating the challenges of spaceflight research as an early career researcher

Experimental Physiology, Volume 111, Issue 9, Page 3877-3879, 1 September 2026.
Colleen S. Deane
wiley   +1 more source

Constraining Electron‐Impact Ionization of O2 Through UV Aurora Observations at Ganymede

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract While photoionization rates of Ganymede's O2 ${\mathrm{O}}_{2}$ dominated atmosphere are well constrained, the contribution of electron‐impact ionization is rather uncertain. Previous quantitative estimates have relied on assumptions about densities and energy distributions of precipitating electrons, or on rare spacecraft measurements that ...
Stefan Duling, Joachim Saur, Darrell Strobel, Philippa Molyneux, Jamey R. Szalay, Thomas K. Greathouse   +5 more
wiley   +1 more source

Generative AI's Impacts on the Environment: What Can Critical Humanities Scholarship Offer Sociological Inquiry?

Sociology Compass, Volume 20, Issue 5, May 2026.
ABSTRACT In recent years, there has been a rapid and massive expansion of generative artificial intelligence (AI) technologies and infrastructures. Big AI Tech corporations are vigorously marketing these services in the pursuit of profit, despite their devastating impacts on the environment.
Deborah Lupton
wiley   +1 more source

V659 Cen: System Members Updated

The Astronomical Journal
V659 Cen is a classical Cepheid which is part of a multiple system. Previous observations have shown that a hot companion dominates an ultraviolet spectrum and a cooler main-sequence star dominates an XMM-Newton spectrum. The Hubble Space Telescope Space
Nancy Remage Evans, Charles Proffitt, Pierre Kervella, Joanna Kuraszkiewicz, H. Moritz Günther, Richard I. Anderson, Alexandre Gallenne, Antoine Mérand, Boris Trahin, Giordano Viviani, Shreeya Shetye   +10 more
doaj   +1 more source

The Importance of Optical Wavelength Data on Atmospheric Retrievals of Exoplanet Transmission Spectra

The Astronomical Journal
Exoplanet transmission spectra provide rich information about the chemical composition, clouds, and temperature structure of exoplanet atmospheres. Most exoplanet transmission spectra only span infrared wavelengths (≳1 μ m), which can preclude crucial ...
Charlotte Fairman, Hannah R. Wakeford, Ryan J. MacDonald   +2 more
doaj   +1 more source

Late-time acceleration with steep exponential potentials

European Physical Journal C: Particles and Fields, 2017
In this letter, we study the cosmological dynamics of steeper potential than exponential. Our analysis shows that a simple extension of an exponential potential allows to capture late-time cosmic acceleration and retain the tracker behavior.
M. Shahalam, Weiqiang Yang, R. Myrzakulov, Anzhong Wang   +3 more
doaj   +1 more source

Status Report on the Chicago-Carnegie Hubble Program (CCHP): Measurement of the Hubble Constant Using the Hubble and James Webb Space Telescopes

The Astrophysical Journal
We present the latest results from the Chicago-Carnegie Hubble Program to measure the Hubble constant, using data from the James Webb Space Telescope (JWST). The overall program aims to calibrate three independent methods: (1) tip of the red giant branch
Wendy L. Freedman, Barry F. Madore, Taylor J. Hoyt, In Sung Jang, Abigail J. Lee, Kayla A. Owens   +5 more
doaj   +1 more source

Hubble Space Telescope proper motions of Large Magellanic Cloud star clusters

Astronomy & Astrophysics
In this paper, we explore the kinematic properties of a sample of 19 young (
Niederhofer F., Cullinane L., Massari D., Bastian N., Bellini A., Aguado-Agelet F., Cassisi S., Erkal D., Libralato M., Kacharov N., Cabrera-Ziri I., Ceccarelli E., Cioni M.-R. L., Dresbach F., Häberle M., Martocchia S., Saracino S.   +16 more
doaj   +1 more source

A Snapshot Survey of Nearby Supernovae with the Hubble Space Telescope

The Astrophysical Journal
Over recent decades, robotic (or highly automated) searches for supernovae (SNe) have discovered several thousand events, many of them in quite nearby galaxies (distances < 30 Mpc).
Raphael Baer-Way, Asia DeGraw, WeiKang Zheng, Schuyler D. Van Dyk, Alexei V. Filippenko, Ori D. Fox, Thomas G. Brink, Patrick L. Kelly, Nathan Smith, Sergiy S. Vasylyev, Thomas de Jaeger, Keto Zhang, Samantha Stegman, Timothy Ross, Sameen Yunus   +14 more
doaj   +1 more source

Maximum Entropy Estimates of Hubble Constant from Planck Measurements

Entropy
A maximum entropy (ME) methodology was used to infer the Hubble constant from the temperature anisotropies in cosmic microwave background (CMB) measurements, as measured by the Planck satellite.
David P. Knobles, Mark F. Westling
doaj   +1 more source