Results 11 to 20 of about 22,046,683 (361)
Earth beyond six of nine planetary boundaries
Science Advances, 2023 This planetary boundaries framework update finds that six of the nine boundaries are transgressed, suggesting that Earth is now well outside of the safe operating space for humanity.
Katherine Richardson +28 more
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Evolved Climates and Observational Discriminants for the TRAPPIST-1 Planetary System [PDF]
Astrophysical Journal, 2018 The TRAPPIST-1 planetary system provides an unprecedented opportunity to study terrestrial exoplanet evolution with the James Webb Space Telescope (JWST) and ground-based observatories.
A. Lincowski +6 more
semanticscholar +1 more source
The formation of planetary systems with SPICA [PDF]
Publications of the Astronomical Society of Australia, 2021 Abstract In this era of spatially resolved observations of planet-forming disks with Atacama Large Millimeter Array (ALMA) and large ground-based telescopes such as the Very Large Telescope (VLT), Keck, and Subaru, we still lack statistically relevant information on the quantity and composition of the material that is building the planets, such as ...
Kamp, I. +40 more
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Transit timing variations in the WASP-4 planetary system [PDF]
Monthly notices of the Royal Astronomical Society, 2019 Transits in the planetary system WASP-4 were recently found to occur 80 s earlier than expected in observations from the TESS satellite. We present 22 new times of mid-transit that confirm the existence of transit timing variations, and are well fitted
J. Southworth +33 more
semanticscholar +1 more source
Dynamical instability and its implications for planetary system architecture [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We examine the effects that dynamical instability has on shaping the orbital properties of exoplanetary systems. Using N-body simulations of non-EMS (Equal Mutual Separation), multi-planet systems we find that the lower limit of the instability timescale
Dong-Hong Wu +3 more
semanticscholar +1 more source
Planetary Systems Biology [PDF]
Molecular Cell, 2005 Combining paleogenetics, protein engineering, synthetic biology, and metabolic modeling, a planetary biology perspective is brought to bear on adaptive evolutionary events in ancient bacteria.
Department of Chemistry, University of Florida, Gainesville, FL 32611 USA ( host institution ) +2 more
openaire +4 more sources
The (In)stability of Planetary Systems [PDF]
The Astrophysical Journal, 2004 37 pages, 49 figures, 13 tables, submitted to ...
Rory Barnes, Thomas R. Quinn
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The fragility of planetary systems [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 We specify the range to which perturbations penetrate a planetesimal system. Such perturbations can originate from massive planets or from encounters with other stars. The latter can have an origin in the star cluster in which the planetary system was born, or from random encounters once the planetary system has escaped its parental cluster.
Portegies Zwart, S.F., Jilkova, L.
openaire +4 more sources
The planetary system of upsilon Andromedae [PDF]
Astronomy & Astrophysics, 2001 The version accepted by A&A, 16 pages, AAS style ...
Ing-Guey Jiang, W.-H. Ip
openalex +5 more sources
On Populism, Planets, and Why Concepts Should Precede Definitions and Theory-Seeking
Sociologica, 2019 Despite its remarkable growth in recent years, the study of populism has long suffered from the lack of a comprehensive theory about its causes, development, and outcomes.
Takis S. Pappas
doaj +1 more source