Results 151 to 160 of about 21,151,583 (337)

ALMA Reveals an Eccentricity Gradient in the Fomalhaut Debris Disk

The Astrophysical Journal
We present evidence of a negative eccentricity gradient in the debris disk of the nearby A-type main-sequence star, Fomalhaut. Fitting to the high-resolution, archival ALMA 1.32 mm continuum data for Fomalhaut (with a synthesized angular resolution of 0 $
Joshua B. Lovell, Elliot M. Lynch, Jay Chittidi, Antranik A. Sefilian, Sean M. Andrews, Grant M. Kennedy, Meredith MacGregor, David J. Wilner, Mark C. Wyatt   +8 more
doaj   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Planet–Planet Scattering and Von Zeipel–Lidov–Kozai Migration—The Dynamical History of HAT-P-11

The Astrophysical Journal
The two planets of the HAT-P-11 system represent fascinating dynamical puzzles due to their significant eccentricities and orbital misalignments. In particular, HAT-P-11 b is in a close-in orbit in which tides should have circularized well within the age
Tiger Lu, Qier An, Gongjie Li, Sarah C. Millholland, Malena Rice, G. Mirek Brandt, Timothy D. Brandt   +6 more
doaj   +1 more source

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source

The Shared Evolution Of Stars And Their Planetary Systems

, 2018
USQ astrophysics research aims to advance understanding of the shared evolution of stars and their planetary systems via a range of complementary studies and collaborations. Current projects include stellar magnetic field mapping and wind modeling, exoplanet detection and characterization, and dynamical modeling of solar system bodies and exoplanetary ...
Carter, Brad, Nicholson, Belinda, Evensberget, Dag, Marsden, Stephen, Hughes,Jim, Perugini, Greg, Zaleski, Shelley, Holt, Tim, Kielkopf, John, Tylor, Christoph, Waite, Ian   +10 more
openaire   +2 more sources

The methanol–methyl cyanide correlation: A chemical path from protostars to comets

Astronomy & Astrophysics
Context. Comets are the frozen remnants of the early Solar System. By investigating their chemical composition, we can unveil the physical processes that shaped our planetary system and the evolution of interstellar material into planetary building ...
Lippi M., Podio L., Cordiner M., Codella C., Walsh C., Booth A. S., Biver N., Bockelée-Morvan D., Giani L., Ceccarelli C., Faggi S., Villanueva G. L.   +11 more
doaj   +1 more source

Origami‐Inspired Structural Design for Aquatic‐Terrestrial Amphibious Robots

Advanced Robotics Research, EarlyView.
This work presents a lightweight amphibious origami robot actuated by a single shape memory alloy wire. A rigid foldable origami structure with displacement amplification enables efficient terrestrial crawling and aquatic swimming. The addition of fan‐shaped units allows controllable turning in both environments.
Weiqi Liu, Chunlong Wang, Xiaohang Sun, Hongwei Guo, Jiayao Ma, Yan Chen   +5 more
wiley   +1 more source

From Lab to Landscape: Environmental Biohybrid Robotics for Ecological Futures

Advanced Robotics Research, EarlyView.
This Perspective explores environmental biohybrid robotics, integrating living tissues, microorganisms, and insects for operation in real‐world ecosystems. It traces the leap from laboratory experiments to forests, wetlands, and urban environments and discusses key challenges, development pathways, and opportunities for ecological monitoring and ...
Miriam Filippi
wiley   +1 more source

Intelligent Maintenance Review for Robots: Multimodal Information, Deep Diagnosis and Embodied Artificial Intelligence

Advanced Robotics Research, EarlyView.
This review maps the methods to monitor robots’ health by fusing vibration, sound, control signals, vision, force, and oil information with artificial intelligence. It identifies deep learning, transfer learning, digital twins, and physics‐informed models as key methodological pathways enabling earlier diagnosis, safer human–robot collaboration, and ...
Yuting Qiao, Hongbo Wang, Naipeng Li, Shuo Wang, Yaguo Lei, Tonghai Wu, Junyi Cao   +6 more
wiley   +1 more source

On the Ordering of Exoplanet Systems

The Astrophysical Journal
We present a comprehensive analysis of planetary radius ordering within multiplanet systems, namely their ordinal position with respect to their size in a given system, utilizing data from the NASA Exoplanet Archive. In addition, we consider not only the
Michael Lozovsky, Hagai B. Perets
doaj   +1 more source