Results 111 to 120 of about 20,670,757 (294)

Diversity in Planetary Architectures from Pebble Accretion: Water Delivery to the Habitable Zone with Pebble Snow

The Astrophysical Journal
“Pebble snow” describes a planet formation mechanism where icy pebbles in the outer disk reach inner planet embryos as the water-ice line evolves inward.
Sean McCloat, Gijs D. Mulders, Sherry Fieber-Beyer   +2 more
doaj   +1 more source

A Review on Sensor Technologies, Control Approaches, and Emerging Challenges in Soft Robotics

Advanced Robotics Research, EarlyView.
This review provides an introspective of sensors and controllers in soft robotics. Initially describing the current sensing methods, then moving on to the control methods utilized, and finally ending with challenges and future directions in soft robotics focusing on the material innovations, sensor fusion, and embedded intelligence for sensors and ...
Ean Lovett, Maxwell Hammond, Niloufar Seyfi, Amirreza Fahim Golestaneh, Venanzio Cichella, Caterina Lamuta   +5 more
wiley   +1 more source

MIRI MRS Observations of Beta Pictoris. II. The Spectroscopic Case for a Recent Giant Collision

The Astrophysical Journal
Modeling observations of the archetypal debris disk around β Pic, obtained in 2023 January with the MIRI Medium Resolution Spectrograph on board JWST, reveals significant differences compared with that obtained with the Infrared Spectrograph on board ...
Christine H. Chen, Cicero X. Lu, Kadin Worthen, David R. Law, B. A. Sargent, Amaya Moro-Martin, G. C. Sloan, Carey M. Lisse, Dan M. Watson, Julien H. Girard, Yiwei Chai, Dean C. Hines, Jens Kammerer, Alexis Li, Marshall Perrin, Laurent Pueyo, Isabel Rebollido, Karl R. Stapelfeldt, Christopher Stark, Michael W. Werner   +19 more
doaj   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

Advanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang, J. An, X. Zheng, D. Wang, S. Wang, X. Wang, P. Zhu, J. Pei, S. Li, J. Paripurana, Y. Han, Z. Tang, X. Gan, Q. He, X. Ma   +14 more
wiley   +1 more source

Evidence for Systematically Larger Dust Grains in Upper Scorpius Relative to Taurus Disks

The Astrophysical Journal
Infrared spectroscopy provides a powerful diagnostic for probing the mineralogical properties of dust grains in the terrestrial planet–forming regions of protoplanetary disks.
Yao Liu, Ilaria Pascucci, Fei Gao, Chengyan Xie, Feng Long, John Carpenter, Klaus M. Pontoppidan, Andrea Banzatti, Richard Booth, Steve Ertel, Min Fang, Uma Gorti, Tamara Molyarova   +12 more
doaj   +1 more source

Multidirectional Motion Strategy of Miniature Water Surface Robot Actuated by Single Exciter

Advanced Robotics Research, EarlyView.
A novel multidirectional motion strategy on the water surface based on a single exciter is proposed, and a single‐exciter single‐plate module is developed for actuation. The driving forces generation mechanism of the module is revealed from the perspective of the asymmetric surface wave field.
Haoxuan He, Dehong Wang, Jing Li, Shijing Zhang, Yingxiang Liu   +4 more
wiley   +1 more source

Investigations of the Formation and Evolution of Planetary Systems

, 2009
Stars and planets are the fundamental objects of the Universe. Their formation processes, though related, may differ in important ways. Stars almost certainly form from gravitational collapse and probably have formed this way since the first stars lit the skies.
Wootten, Alwyn, Butler, Bryan, Hales, Antonio, Corder, Stuartt, Brown, Robert, Wilner, David   +5 more
openaire   +2 more sources

Achievement of the Planetary Defense Investigations of the Double Asteroid Redirection Test (DART) Mission

NASA's Double Asteroid Redirection Test(DART)mission was the first to demonstrate asteroid deflection, and the mission's Level 1 requirements guided its planetary defense investigations. Here, we summarize DART's achievement of those requirements.
Dotto, Elisabetta, Deshapriya, J. D. Prasanna, Barbee, Brent W., Ferrari, Fabio, Giordano, Carmine, Daly, R. Terik, Ferrais, Marin, Barnouin, Olivier S., Eggl, Siegfried, Busch, Michael W., Beccarelli, Joel, Moskovitz, Nicholas A., Föhring, Dora, Rivkin, Andrew S., Glenar, David A., Hirabayashi, Masatoshi, Buratti, Bonnie J., Davison, Thomas M., Conversi, Luca, Gai, Igor, Greenstreet, Sarah, Hasselmann, Pedro H., Bekker, Dmitriy L., Farnham, Tony L., Cheng, Andrew F., Penttilä, Antti, Chabot, Nancy L., Stickle, Angela M., Richardson, Derek C., Chatelain, Joseph P., Agrusa, Harrison F., Chesley, Steven R., Gomez, Edward, DeCoster, Mallory E., Fahnestock, Eugene G., Bannister, Michele T., Syal, Megan Bruck, Espiritu, Raymond C., Bagatin, Adriano Campo, Ernst, Carolyn M., Green, Simon F., Husarik, Marek, Graninger, Dawn M., Abell, Paul, Herreros, Isabel, Chocron, Sidney, Fuentes-Munoz, Oscar, Zinzi, Angelo, Collins, Gareth S., Thomas, Cristina A.   +49 more
core   +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

Planetary Architectures of Kepler Compact Multiplanet Systems with Binary-star Companions

The Astronomical Journal
Planets in binary-star systems exhibit demographic differences compared to planets in single-star systems. In particular, planets with binary-star hosts have a lower overall occurrence rate compared to their single-star counterparts, as well as a ...
Kendall Sullivan, Gregory J. Gilbert
doaj   +1 more source