Results 1 to 10 of about 946,047 (336)
Terrestrial planet formation from lost inner solar system material. [PDF]
Sci Adv, 2021 Two fundamentally different processes of rocky planet formation exist, but it is unclear which one built the terrestrial planets of the solar system. Either they formed by collisions among planetary embryos from the inner solar system, or by accreting sunward-drifting millimeter-sized 'pebbles' from the outer solar system.
Burkhardt C +6 more
europepmc +2 more sources
The Solar System as an Exoplanetary System [PDF]
The Astrophysical Journal, 2015 With the availability of considerably more data, we revisit the question of how special our Solar System is, compared to observed exoplanetary systems. To this goal, we employ a mathematical transformation that allows for a meaningful, statistical comparison.
Rebecca G. Martin, Mario Livio
arxiv +7 more sources
Metal-rich stars are less suitable for the evolution of life on their planets
Nature Communications, 2023 Atmospheric ozone and oxygen protect the terrestrial biosphere against harmful ultraviolet (UV) radiation. Here, we model atmospheres of Earth-like planets hosted by stars with near-solar effective temperatures (5300 to 6300 K) and a broad range of ...
Anna V. Shapiro +9 more
doaj +1 more source
Simplified Relations for the Martian Night-Time OH* Suitable for the Interpretation of Observations
Remote Sensing, 2022 Observations of excited hydroxyl (OH*) emissions are broadly used for inferring information about atmospheric dynamics and composition. We present several analytical approximations for characterizing the excited hydroxyl layer in the Martian atmosphere ...
Mykhaylo Grygalashvyly +4 more
doaj +1 more source
Brine residues and organics in the Urvara basin on Ceres
Nature Communications, 2022 The authors report the discovery of salts and fresh organic-rich exposures in the Urvara basin, possibly linked to a late resurfacing of the crater floor. These results are consistent with a deep-seated brine/salt reservoir in the crust of Ceres.
A. Nathues +8 more
doaj +1 more source
The formation of the solar system [PDF]
Physica Scripta, 2015 The solar system started to form about 4.56 Gyr ago and despite the long intervening time span, there still exist several clues about its formation. The three major sources for this information are meteorites, the present solar system structure and the planet-forming systems around young stars.
S Pfalzner +9 more
openaire +5 more sources
Earth and Space Science, 2023 In this paper we describe a method to compute spatial scales for images acquired by NASA's Mars Curiosity rover (Mars Science Laboratory, MSL). The method is based on the assumption that the rover stands on an infinite plane that may have any orientation
Walter Goetz +4 more
doaj +1 more source
Energies, 2021 The effects of doping manganese ions into a cerium oxide lattice for a thermochemical two-step water-splitting cycle to produce oxygen and hydrogen and new synthesis methods were experimentally investigated.
Hyun-Seok Cho +4 more
doaj +1 more source
Is there an exoplanet in the Solar system? [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2016 Abstract We investigate the prospects for the capture of the proposed Planet 9 from other stars in the Sun's birth cluster. Any capture scenario must satisfy three conditions: the encounter must be more distant than ∼150 au to avoid perturbing the Kuiper belt; the other star must have a wide-orbit planet (a ≳ 100 au); the planet must be ...
Mustill, Alexander J., +2 more
openaire +5 more sources
Earth and Space Science, 2023 Future exploration efforts of the Moon, Mars, and other bodies are poised to focus heavily on persistent and sustainable survey and research efforts, especially given the recent interest in a long‐term sustainable human presence at the Moon. Key to these
Prabal Saxena +14 more
doaj +1 more source