Results 101 to 110 of about 4,846 (203)

A Radially Resolved Magnetic Field Threading the Disk of TW Hya

The Astrophysical Journal Letters
We present a new approach to detecting and characterizing a magnetic field in protoplanetary disks through the differential broadening of unpolarized molecular emission from CN.
Richard Teague, Boy Lankhaar, Sean M. Andrews, Chunhua Qi, Roger R. Fu, David J. Wilner, John B. Biersteker, Joan R. Najita   +7 more
doaj   +1 more source

Planetary-scale streak structure reproduced in high-resolution simulations of the Venus atmosphere with a low-stability layer

Nature Communications, 2019
A planetary-scale streak structure in the Venusian lower-cloud layer was observed by the Akatsuki orbiter. Here the authors present numerical simulations that reproduce such structure and reveal that a low-stability layer, which induces baroclinic ...
Hiroki Kashimura, Norihiko Sugimoto, Masahiro Takagi, Yoshihisa Matsuda, Wataru Ohfuchi, Takeshi Enomoto, Kensuke Nakajima, Masaki Ishiwatari, Takao M. Sato, George L. Hashimoto, Takehiko Satoh, Yoshiyuki O. Takahashi, Yoshi-Yuki Hayashi   +12 more
doaj   +1 more source

An Analysis of the Recent Global Geologic History of Europa: Evidence for Clustered Resurfacing and a Lack of True Polar Wander

Journal of Geophysical Research: Planets, Volume 131, Issue 11, November 2026.
Abstract Global geologic mapping shows that Europa’s surface is made up of an array of features including extensive ridged plains, regions of broad disruption termed chaos terrain, quasi‐linear ridges that span thousands of km, and bands up to 60 km wide that extend for 100–1000s of km.
Erin J. Leonard, D. Alex Patthoff, David A. Senske   +2 more
wiley   +1 more source

Europa’s H2O2: Temperature Insensitivity and a Correlation with CO2

The Planetary Science Journal
H _2 O _2 is part of Europa’s water-ice radiolytic cycle and a potential source of oxidants to Europa’s subsurface ocean. However, factors controlling the concentration of this critical surface species remain unclear.
Peiyu Wu, Samantha K. Trumbo, Michael E. Brown, Katherine de Kleer   +3 more
doaj   +1 more source

Physics in perspective, volume 2. Part B: The interfaces [PDF]

, 1973
Detailed information of physics subfields and interface areas are presented. Topics discussed include: astrophysics and relativity, earth and planetary physics, physics in chemistry, physics in biology, instrumentation, education, and dissemination and ...

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Laboratory Experiments Identify Meteoritic Organic Precursors for Chlorinated Compounds Detected by the Sample Analysis at Mars (SAM) Instrument at Gale Crater

Journal of Geophysical Research: Planets, Volume 131, Issue 11, November 2026.
Abstract The Viking missions landed two spacecraft on Mars each equipped with a pyrolysis‐gas chromatograph‐mass spectrometer system capable of detecting signs of life. Although working as intended, detections of chloromethane and dichloromethane were initially attributed to terrestrial contamination.
A. Mojarro, J. Herrera, A. Sistiaga, S. S. O’Reilly, J. C. Aponte, A. Buch, J. L. Eigenbrode, D. P. Glavin, C. Freissinet, M. Millan, C. Szopa, R. E. Summons   +11 more
wiley   +1 more source

Examining the Potential for Methyl Halide Accumulation and Detectability in Possible Hycean-type Atmospheres

The Astrophysical Journal Letters
Some sub-Neptune planets may host habitable conditions; for example “Hycean” worlds with H _2 envelopes over liquid water oceans can maintain potentially hospitable pressures and temperatures at their surface.
Michaela Leung, Shang-Min Tsai, Edward W. Schwieterman, Daniel Angerhausen, Janina Hansen   +4 more
doaj   +1 more source

Space station needs, attributes and architectural options study. Volume 1: Executive summary [PDF]

, 1983
Planetary explorations, Earth observations, space physics, astronomy-astrophysics, solar physics, life/biological/medical sciences, materials processing in space, communications, and technology development are addressed.

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Sulfidation Reaction Mechanisms of Olivine and Diopside at Mercury's Reducing Conditions

Journal of Geophysical Research: Planets, Volume 131, Issue 11, November 2026.
Abstract The surface of Mercury contains elevated amounts of sulfur of up to 4 wt.%. Volcanic degassing of S from the interior of the planet could have initiated sulfidation reactions between the degassed S and surface materials in the planet's past, leading to the observed surface S enrichment.
Rody C. Erftemeijer, Thomas Müller, Christian J. Renggli   +2 more
wiley   +1 more source

AS12-AS101-3 Breakthrough Capability for the NASA Astrophysics Explorer Program: Reaching the Darkest Sky

, 2011
We describe a mission architecture designed to substantially increase the science capability of the NASA Science Mission Directorate (SMD) Astrophysics Explorer Program for all AO proposers working within the near-UV to far-infrared spectrum.
Oleson, S., Thronson, H., Gardner, J., Falck, R., Kruk, J., Fixsen, D., Garvin, J., Greenhouse, Matthew, Benson, S.   +8 more
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