Results 1 to 10 of about 109,040 (180)

The Dynamical Consequences of a Super-Earth in the Solar System

open access: yesThe Planetary Science Journal, 2023
Placing the architecture of the solar system within the broader context of planetary architectures is one of the primary topics of interest within planetary science. Exoplanet discoveries have revealed a large range of system architectures, many of which
Stephen R. Kane
doaj   +1 more source

Calculation of the Cosmological Constant for the Planetary System in Schwarzschild’s Cosmological Model

open access: yesUniverse, 2022
In this work, the static cosmological model of the Schwarzschild solution for the solar system is proposed taking into account the cosmological constant in the equation of the general theory of relativity (GTR) proposed by A. Einstein.
Alvaro Humberto Salas Salas   +2 more
doaj   +1 more source

Surrounded by Giants: Habitable Zone Stability Within the HD 141399 System

open access: yesThe Astronomical Journal, 2023
The search for exoplanets has revealed a diversity of planetary system architectures, the vast majority of which diverge significantly from the template of the solar system.
Stephen R. Kane
doaj   +1 more source

Organic signatures in Pleistocene cherts from Lake Magadi (Kenya) – implications for early Earth hydrothermal deposits [PDF]

open access: yesBiogeosciences, 2019
Organic matter in Archean hydrothermal cherts may provide an important archive for molecular traces of the earliest life on Earth. The geobiological interpretation of this archive, however, requires a sound understanding of organic matter preservation ...
M. Reinhardt   +7 more
doaj   +1 more source

Deep Learning-Driven Detection and Mapping of Rockfalls on Mars

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
The analysis of rockfall distribution and magnitude is a useful tool to study the past and current endogenic and exogenic activity of Mars. At the same time, tracks left by rockfalls provide insights into the mechanical properties of the Martian surface.
Valentin Tertius Bickel   +5 more
doaj   +1 more source

Impacts drive lunar rockfalls over billions of years

open access: yesNature Communications, 2020
In this study, the authors present a global map of rockfalls on the lunar surface and determine impact events as short- and long-term driver for rockfall events.
Valentin Tertius Bickel   +4 more
doaj   +1 more source

New worlds, new chemistry, new ceramics

open access: yesInternational Journal of Ceramic Engineering & Science, 2021
Space missions have documented the chemical diversity and complexity of planets in our solar system. Astronomers have found thousands of exoplanets orbiting other stars in our galaxy.
Alexandra Navrotsky, Megan Householder
doaj   +1 more source

Simultaneous formation of solar system giant planets [PDF]

open access: yesAstronomy & Astrophysics, 2011
In the last few years, the so-called "Nice model" has got a significant importance in the study of the formation and evolution of the solar system. According to this model, the initial orbital configuration of the giant planets was much more compact than the one we observe today.
Guilera, Octavio Miguel   +3 more
openaire   +3 more sources

The Dust-to-Gas Ratio, Size Distribution, and Dust Fall-Back Fraction of Comet 67P/Churyumov-Gerasimenko: Inferences From Linking the Optical and Dynamical Properties of the Inner Comae

open access: yesFrontiers in Physics, 2020
In this work, we present results that simultaneously constrain the dust size distribution, dust-to-gas ratio, fraction of dust re-deposition, and total mass production rates for comet 67P/Churyumov-Gerasimenko.
Raphael Marschall   +7 more
doaj   +1 more source

Are There Terrestrial Planets Lurking in the Outer Solar System?

open access: yesThe Astrophysical Journal Letters, 2023
Motivated by recent measurements of the free-floating-planet mass function at terrestrial masses, we consider the possibility that the solar system may have captured a terrestrial planet early in its history.
Amir Siraj
doaj   +1 more source

Home - About - Disclaimer - Privacy