Results 11 to 20 of about 1,663,862 (332)

Planet Earth [PDF]

open access: yes, 1990
A planets surface provides geologists with clues as to what is happening inside. But many of these clues are ambiguous because so many other processes (impacts and erosion, for example) contribute to surface characteristics.
Anderson, Don L.
openaire   +4 more sources

An Informational–Entropic Approach to Exoplanet Characterization [PDF]

open access: yesEntropy
In the past, measures of the “Earth-likeness” of exoplanets have been qualitative, considering an abiotic Earth, or requiring discretionary choices of what parameters make a planet Earth-like.
Sara Vannah   +2 more
doaj   +2 more sources

CoRoT’s first seven planets: An overview*

open access: yesEPJ Web of Conferences, 2011
The up to 150 day uninterrupted high-precision photometry of about 100000 stars – provided so far by the exoplanet channel of the CoRoT space telescope – gave a new perspective on the planet population of our galactic neighbourhood.
Barge P.   +4 more
doaj   +3 more sources

Implications of the TTV-detection of close-in terrestrial planets around M stars for their origin and dynamical evolution

open access: yesEPJ Web of Conferences, 2011
It has been shown that an Earth-size planet or a super-Earth, in resonance with a transiting Jupiter-like body around an M star, can create detectable TTV signals (Kirste & Haghighipour, 2011).
Rastegar S., Haghighipour N.
doaj   +3 more sources

GJ 367b: A dense, ultrashort-period sub-Earth planet transiting a nearby red dwarf star [PDF]

open access: yesScience, 2021
Description A nearby iron-rich sub-Earth planet The mass and radius of an exoplanet determine its mean density, which provides information about the possible interior structure. Lam et al.
K. Lam   +77 more
semanticscholar   +1 more source

Evidence for the volatile-rich composition of a 1.5-Earth-radius planet [PDF]

open access: yesNature Astronomy, 2022
The population of planets smaller than approximately 1.7 Earth radii ( R _⊕) is widely interpreted as consisting of rocky worlds, generally referred to as super-Earths.
C. Piaulet   +20 more
semanticscholar   +1 more source

Venus, the Planet: Introduction to the Evolution of Earth’s Sister Planet

open access: yesSpace Science Reviews, 2023
Venus is the planet in the Solar System most similar to Earth in terms of size and (probably) bulk composition. Until the mid-20th century, scientists thought that Venus was a verdant world—inspiring science-fictional stories of heroes battling megafauna
J. O'Rourke   +12 more
semanticscholar   +1 more source

EM-Earth: The Ensemble Meteorological Dataset for Planet Earth

open access: yesBulletin of The American Meteorological Society - (BAMS), 2022
Gridded meteorological estimates are essential for many applications. Most existing meteorological datasets are deterministic and have limitations in representing the inherent uncertainties from both the data and methodology used to create gridded ...
Guoqiang Tanga   +2 more
semanticscholar   +1 more source

The First Habitable-zone Earth-sized Planet from TESS. I. Validation of the TOI-700 System [PDF]

open access: yesAstronomical Journal, 2020
We present the discovery and validation of a three-planet system orbiting the nearby (31.1 pc) M2 dwarf star TOI-700 (TIC 150428135). TOI-700 lies in the TESS continuous viewing zone in the Southern Ecliptic Hemisphere; observations spanning 11 sectors ...
E. Gilbert   +94 more
semanticscholar   +1 more source

Inferring the instability of a dynamical system from the skill of data assimilation exercises [PDF]

open access: yesNonlinear Processes in Geophysics, 2021
Data assimilation (DA) aims at optimally merging observational data and model outputs to create a coherent statistical and dynamical picture of the system under investigation.
Y. Chen   +6 more
doaj   +1 more source

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