Results 161 to 170 of about 5,821,392 (249)

Direct Detection of Hydrogen Reveals a New Macroscopic Crustal Water Reservoir on Early Mars

open access: yesGeophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract The next great leap in Martian exploration is the return of samples to Earth. Maximizing their scientific value requires non‐destructive analytical techniques for early three‐dimensional characterization. Neutron computed tomography (CT), highly sensitive to hydrogen, complements conventional X‐ray CT and enables the detection of hydrous ...
Estrid Buhl Naver   +15 more
wiley   +1 more source

Corundum Discovered by SuperCam and the Perseverance Rover at Jezero Crater, Mars

open access: yesGeophysical Research Letters, Volume 53, Issue 16, 28 August 2026.
Abstract Mars is primarily composed of mafic mineral assemblages and their alteration products, but small, scattered rocks strewn across the landscape offer clues to greater petrological diversity. While traversing the Jezero crater rim, the Perseverance rover encountered several plagioclase‐rich light‐toned float rocks.
A. M. Ollila   +43 more
wiley   +1 more source

From o‐Phenylenediamine to Flavin Derivatives: A Potential Prebiotic Carbon Skeleton Expansion With Formaldehyde, Cyanide, and CO2

open access: yesAdvanced Synthesis &Catalysis, Volume 368, Issue 16, 18 August 2026.
A Strecker‐type reaction of aromatic ortho‐diamines with various aldehydes and cyanide assembles the bicyclic amidine core of flavin‐derived heterocycles under mild conditions. Subsequent oxidation, radical or photochemical cyanation, carboxylation with CO2, and CO2‐mediated cyclization build the three‐ring alloxazine scaffold. This sequence provides a
Christian Held   +2 more
wiley   +1 more source

A chip-level MEMS short-period seismometer for distributed planetary seismic networks. [PDF]

open access: yesMicrosyst Nanoeng
Wei X   +7 more
europepmc   +1 more source

Photovoltaics for space applications. [PDF]

open access: yesCommun Eng
Gao M, Nia NY, Vaidya N.
europepmc   +1 more source

Issue Information

open access: yes
The Depositional Record, Volume 12, Issue 4, September 2026.
wiley   +1 more source

Topography influences megadune distribution and morphology. [PDF]

open access: yesProc Natl Acad Sci U S A
Zhao H   +6 more
europepmc   +1 more source

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