Close-in giant planets (e.g., "hot Jupiters") are thought to form far from their host stars and migrate inward, through the terrestrial planet zone, via torques with a massive gaseous disk. Here we simulate terrestrial planet growth during and after giant planet migration. Several-Earth-mass planets also form interior to the migrating jovian planet, analogous to recently discovered "hot Earths." Very-water-rich, Earth-mass planets form from surviving material outside the giant planet's orbit, often in the habitable zone and with low orbital eccentricities. More than a third of the known systems of giant planets may harbor Earth-like planets.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1126/science.1130461 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Multi-wavelength global maps of Jupiter and Saturn using Cassini imaging system data.
Sci Data
January 2025
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, 91109, USA.
The Imaging Science Subsystem onboard the Cassini spacecraft recorded numerous high-quality images of Jupiter and Saturn at various wavelengths, from ultraviolet to near-infrared, during its 20-year mission from 1997 to 2017. Using these images, we have developed global maps of Jupiter and Saturn across multiple wavelengths. These maps reveal the global atmospheric structures of Jupiter and Saturn, offering a comprehensive tool to study the physical and dynamic processes of these atmospheric systems on a global scale.
View Article and Find Full Text PDFTidally driven remelting around 4.35 billion years ago indicates the Moon is old.
Nature
December 2024
Collège de France, CNRS, PSL University, Sorbonne University, Paris, France.
The last giant impact on Earth is thought to have formed the Moon. The timing of this event can be determined by dating the different rocks assumed to have crystallized from the lunar magma ocean (LMO). This has led to a wide range of estimates for the age of the Moon between 4.
View Article and Find Full Text PDFThe Impact of Early Diagenesis on Biosignature Preservation in Sulfate Evaporites: Insights From Messinian (Late Miocene) Gypsum.
Geobiology
December 2024
Dipartimento di Scienze Della Terra, Università Degli Studi di Torino, Torino, Italy.
Due to their fast precipitation rate, sulfate evaporites represent excellent repositories of past life on Earth and potentially on other solid planets. Nevertheless, the preservation potential of biogenic remains can be compromised by extremely fast early diagenetic processes. The upper Miocene, gypsum-bearing sedimentary successions of the Mediterranean region, that formed ca.
View Article and Find Full Text PDFEnergetic neutral atom imaging reveals nearly 11-year cycle of the ring current of Saturn.
Nat Commun
December 2024
Institute of Space Physics and Applied Technology, Peking University, Beijing, China.
The drift motion of energetic charged particles can generate an azimuthal electric current around the planet known as the ring current, which regulates the field configuration of the magnetosphere. However, limited coverage of in-situ measurements makes it challenging to investigate the long-term variations of the global ring current. Taking advantage of the energetic neutral atom (ENA) imaging onboard the Cassini mission, we present a nearly 11-year cycle of the suprathermal ring current populations in Saturn's magnetosphere.
View Article and Find Full Text PDFBeyond Earth: Harnessing Marine Resources for Sustainable Space Colonization.
Mar Drugs
October 2024
MARE-Marine and Environmental Sciences Centre, ARNET-Aquatic Research Network Associated Laboratory, ESTM, Polytechnic of Leiria, 2520-641 Peniche, Portugal.
Article Synopsis
- The challenge of sustainable space exploration is currently limited by resource scarcity and harsh environments, prompting a search for innovative solutions.
- Recent advancements in space biotechnology suggest that marine organisms and their chemicals can provide essential resources for long-term life support, food, medicine, and energy in space habitats.
- By exploring the untapped potential of Earth's oceans, researchers envision a future where humans can thrive on other planets, merging marine and space sciences to push the boundaries of colonization.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!