Results 31 to 40 of about 40,146 (171)
Meteoritics &Planetary Science, EarlyView.Abstract Samples returned from asteroid Ryugu by the Hayabusa2 mission are dominated by fine‐grained matrix material made of phyllosilicates and nanosulfides. Here, we report the mineralogical, textural, and chemical characteristics of nanosulfide‐rich regions identified in Ryugu particles.
Roberto Conconi +9 more
wiley +1 more source
Atmospheric effects of stellar cosmic rays on Earth-like exoplanets orbiting M-dwarfs
, 2015 M-dwarf stars are generally considered favourable for rocky planet detection. However, such planets may be subject to extreme conditions due to possible high stellar activity.
Grenfell, J. L. +3 more
core +7 more sources
CHISL: The Combined High-resolution and Imaging Spectrograph for the LUVOIR Surveyor
, 2016 NASA is currently carrying out science and technical studies to identify its next astronomy flagship mission, slated to begin development in the 2020s. It has become clear that a Large Ultraviolet/Optical/IR (LUVOIR) Surveyor mission (primary diameter 12
Fleming, Brian +2 more
core +1 more source
Small but mighty: Impact hazards from iron Near‐Earth Objects
Meteoritics &Planetary Science, EarlyView.Abstract Small asteroids can impact Earth unexpectedly, as demonstrated by the Chelyabinsk event in 2013. The warning times are likely to be short, and the first tools for fast hazard predictions have been developed in the last years for encounters with rocky or cometary objects, which quickly fragment in the atmosphere and cause airbursts. However, in
Robert Luther +5 more
wiley +1 more source
Earth-like Habitats in Planetary Systems
, 2014 Understanding the concept of habitability is related to an evolutionary knowledge of the particular planet-in-question. Additional indications so-called "systemic aspects" of the planetary system as a whole governs a particular planet's claim on ...
Bitsch, Bertram +10 more
core +1 more source
A geophysical investigation of the Roter Kamm impact crater, Namibia
Meteoritics &Planetary Science, EarlyView.Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus +6 more
wiley +1 more source
Space station needs, attributes and architectural options study. Volume 1: Executive summary [PDF]
Planetary explorations, Earth observations, space physics, astronomy-astrophysics, solar physics, life/biological/medical sciences, materials processing in space, communications, and technology development are addressed.
core +1 more source
Rapid terrestrial weathering of the CI1 carbonaceous chondrite find Oued Chebeika 002
Meteoritics &Planetary Science, EarlyView.Abstract Alteration of historic CI1 meteorite falls during their curation demonstrates the susceptibility of smectite‐rich carbonaceous chondrites to terrestrial exposure. The discovery of Oued Chebeika 002 in Morocco in June 2024 presents a unique opportunity to document the earliest stages of weathering of a CI1 find.
Martin R. Lee, Jasper Glazer
wiley +1 more source
Breakthrough Capability for the NASA Astrophysics Explorer Program: Reaching the Darkest Sky [PDF]
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.
Benson, Scott W. +8 more
core +1 more source
Microlensing path parametrization for Earth-like Exoplanet detection around solar mass stars
, 2018 We propose a new parametrization of the impact parameter u0 and impact angle {\alpha} for microlensing systems composed by an Earth-like Exoplanet around a Solar mass Star at 1 AU.
de Almeida, L., Nascimento Jr, J. -D. do
core +2 more sources