Results 41 to 50 of about 3,219 (219)
The Great Cosmic Silence: What Does the Fermi Paradox Tell About the Future of Humanity?
Global Policy, EarlyView.ABSTRACT This article examines how institutional time horizons shape the long‐term survival prospects of human technological civilisation. While research on global catastrophic and existential risks has expanded, the temporal structures of political‐economic institutions remain underexamined.
Heikki Patomäki
wiley +1 more source
Computer Graphics Forum, EarlyView.We present design considerations for animated transitions of the appearance of 3D spatial datasets in a hybrid Augmented Reality‐desktop context. Such hybrid interfaces combine both traditional and immersive displays to facilitate the exploration of 2D and 3D data representations in the environment in which they are best displayed.
Yucheng Lu +6 more
wiley +1 more source
Exoplanet Atmospheric Studies At High Spectral Resolution [PDF]
, 2020 The study of exoplanet atmospheres is essential to understand the formation, evolution and composition of exoplanets. When a planet pass between its host star and an observer, a fraction of the star-light is absorbed by its atmosphere, thus revealing its
Allart, Romain
core +1 more source
Soot Planets Instead of Water Worlds
The Astrophysical Journal LettersSome low-density exoplanets are thought to be water-rich worlds that formed beyond the snow line of their protoplanetary disk, possibly accreting coequal portions of rock and water.
Jie Li +5 more
doaj +1 more source
Elevated Eccentricities in the Radius Valley Hint at Water-rich Mini-Neptunes
The Astrophysical JournalWhile recent planet-formation models broadly reproduce the observed population of super-Earths and mini-Neptunes, as well as the bimodal radius distribution (the “radius valley”), it remains unclear whether all these planets share a common rocky ...
Sho Shibata, Andre Izidoro
doaj +1 more source
Scaling K2. VI. Reduced Small-planet Occurrence in High-galactic-amplitude Stars
The Astronomical Journal, 2023 In this study, we performed a homogeneous analysis of the planets around FGK dwarf stars observed by the Kepler and K2 missions, providing spectroscopic parameters for 310 K2 targets —including 239 Scaling K2 hosts—observed with Keck/HIRES.
Jon K. Zink +15 more
doaj +1 more source
Tentative Evidence for Water Vapor in the Atmosphere of the Neptune-sized Exoplanet HD 106315c [PDF]
, 2022 We present a transmission spectrum for the Neptune-sized exoplanet HD 106315c from optical to infrared wavelengths based on transit observations from the Hubble Space Telescope/Wide Field Camera 3, K2, and Spitzer.
Molliere, Paul +29 more
core +1 more source
Formation of Ultra-short-period Planets in Hot Jupiter Systems: Application to WASP-47
The Astrophysical Journal LettersThe WASP-47 system is notable as the first known system hosting both inner and outer low-mass planetary companions around a hot Jupiter, with an ultra-short-period (USP) planet as the innermost planetary companion.
Su Wang +4 more
doaj +1 more source
Planet Formation Theory in the Era of ALMA and Kepler: from Pebbles to Exoplanets
ASP Conference Series, 2022 38 pages, 13 figures, review chapter accepted to Protostars and Planets VII, editors: Shu-ichiro Inutsuka, Yuri Aikawa, Takayuki Muto, Kengo Tomida, and Motohide Tamura, corrected label in Fig ...
Drazkowska, Joanna +9 more
openaire +3 more sources
Rapid Communications in Mass Spectrometry, Volume 40, Issue 19, 15 October 2026.ABSTRACT Rationale Nitrogen isotope values have been widely used for tracing ancient biogeochemical processes, but contaminant‐sensitive materials, such as Precambrian sedimentary rocks, meteorites, or returned extraterrestrial samples, often have low nitrogen levels and are thus vulnerable to modern organic contamination.
Kunmanee Bubphamanee +2 more
wiley +1 more source