Results 191 to 200 of about 266,284 (323)

Cosmic ray exposure and gas retention ages of the shocked angrite Northwest Africa 7203: Implications for a collisional history of angrites' parent body

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract Angrites and eucrites are among the oldest basaltic rocks in the solar system. However, the shock histories of these meteorite groups differ markedly, as most angrites show little to no evidence of shock metamorphism. While some angrites exhibit weak wavy extinction in olivine, indicative of low‐level shock, only two—Northwest Africa (NWA ...
Atsushi Takenouchi   +4 more
wiley   +1 more source

The Origin of the Cosmic Rays [PDF]

open access: green, 1928
R. A. Millikan, Garnet Cameron
openalex   +1 more source

Late onset cardiovascular dysfunction in adult mice resulting from galactic cosmic ray exposure. [PDF]

open access: yesiScience, 2022
Bishawi M   +12 more
europepmc   +1 more source

Analysis of four Apollo 16 double drive tubes using QEMSCAN® mapping techniques: Implications for sampling the lunar regolith in highland terrains

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract The lunar regolith contains a rich history of Solar System impact events and solar activity. Many future missions will land in the south polar region of the Moon, a heavily impact cratered highland terrain, similar to the Apollo 16 landing site.
Stephanie L. Halwa   +3 more
wiley   +1 more source

A Single-Year Cosmic Ray Event at 5410 BCE Registered in 14C of Tree Rings. [PDF]

open access: yesGeophys Res Lett, 2021
Miyake F   +14 more
europepmc   +1 more source

Noble gases and nitrogen in material from asteroid Bennu

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty   +7 more
wiley   +1 more source

The fall of the Haag (LL4‐6) chondrite breccia—Just 8 years after the nearby fall Stubenberg (LL6)

open access: yesMeteoritics &Planetary Science, EarlyView.
Abstract On October 24, 2024, an impressive fireball was visible over Austria. After the possible strewn field was calculated, the first sample of the Haag meteorite, with a mass of 8.76 g, was discovered on November 2, 2024, 8 days after the fireball event. Four more samples were found afterward putting the total sample mass at about 151 g.
Addi Bischoff   +25 more
wiley   +1 more source

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