Results 41 to 50 of about 4,153,032 (280)

A comparative assessment of different deviation strategies for dangerous NEO [PDF]

, 2006
In this paper a number of deviation strategies for dangerous Near Earth Objects (NEO) have been compared. For each strategy (i.e. Solar Collector, Nuclear Blast, Kinetic Impactor, Low-thrust Propulsion, Mass Driver) a multi criteria optimisation method ...
Colombo, Camilla, Vasile, Massimiliano, S. Cuartielles, Joan-Pau, Radice, Gianmarco   +3 more
core   +3 more sources

Pre-impact Albedo Map and Photometric Properties of the (65803) Didymos Asteroid Binary System from DART and Ground-based Data

The Planetary Science Journal
This study provides a pre-impact map of the albedo of the Double Asteroid Redirection Test (DART) target Dimorphos corrected for all the effects of viewing geometry, as well as an estimate of photometric roughness for the hemisphere imaged by DART. Other
B. J. Buratti, J. Pittichová, I. Mishra, J. K. Hillier, J. A. Mosher, S. R. Chesley, J. M. Sunshine, O. Barnouin, C. M. Ernst, R. T. Daly, J-Y Li, A. F. Cheng, A. S. Rivkin, J. Rizos   +13 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

FEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure, Misaki K. Nishio, Satoru Okuda, Kohji Hotta   +3 more
wiley   +1 more source

Encounter Circumstances of Asteroid 99942 Apophis with the Catalog of Known Asteroids

The Planetary Science Journal
Asteroid 99942 Apophis will pass near Earth in 2029 April. Expected to miss our planet by a safe margin, that could change if Apophis's path were perturbed by a collision with another asteroid in the interim.
Paul Wiegert, Benjamin Hyatt
doaj   +1 more source

Impact hazard protection efficiency by a small kinetic impactor [PDF]

, 2013
In this paper the ability of a small kinetic impactor spacecraft to mitigate an Earth-threatening asteroid is assessed by means of a novel measure of efficiency.
Sanchez Cuartielles, Joan-Pau, Colombo, Camilla, J. P. Sanchez, C. Colombo   +3 more
core   +1 more source

The human gut microbiome across the life course

FEBS Letters, EarlyView.
Despite significant individual variation and continuous change throughout life, the human gut microbiome follows some life stage‐specific trends. This article provides a brief overview of how gut microbiome composition shifts across different phases of life. Created in BioRender. Özkurt, E. (2026) https://BioRender.com/8q4nrnc.
Alise J. Ponsero, Basak Bahcivanci, Antonietta Hayhoe, Animesh Acharjee, Ezgi Özkurt   +4 more
wiley   +1 more source

Size Constraint on Hayabusa2 Extended Mission Rendezvous Target 1998 KY26 via VLT/VISIR Nondetection

The Astronomical Journal
1998 KY _26 is a tiny near-Earth asteroid ( H = 26.1) discovered in 1998. It has been selected as the target of the Hayabusa2 extended mission, which will rendezvous with 1998 KY _26 in 2031.
Jin Beniyama, Thomas G. Müller, Marco Delbo, Eric Pantin, Olivier R. Hainaut, Marco Micheli, Michaël Marsset   +6 more
doaj   +1 more source

Toward a European Facility for Ground-Based Radar Observations of Near-Earth Objects

Remote Sensing, 2023
In this work, we present the preliminary results of radar observations of Near-Earth Objects (NEOs) carried out by European radio telescopes in the framework of the European Space Agency (ESA) project “NEO observation concepts for radar systems”, aimed ...
Giuseppe Pupillo, Simona Righini, Roberto Orosei, Claudio Bortolotti, Giuseppe Maccaferri, Mauro Roma, Marco Mastrogiuseppe, Tonino Pisanu, Luca Schirru, Stefano Cicalò, Antonio Tripodo, Jorma Harju, Antti Penttilä, Anne K. Virkki, Uwe Bach, Alexander Kraus, Alessio Margheri, Riccardo Ghiani, Maria N. Iacolina, Giuseppe Valente, Detlef Koschny, Richard Moissl, Gunther Sessler   +22 more
doaj   +1 more source

Near-Earth Objects in the Taurid complex [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
The Taurid complex consists of many substreams and has both comet 2P/Encke and several Near-Earth Objects (NEOs) moving within it. We conduct a new search for associated NEOs, investigate the orbital evolution of any identified NEO and search for meteor showers associated with these NEOs.
P. B. Babadzhanov, I. P. Williams, G. I. Kokhirova   +2 more
openaire   +1 more source

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

FEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee, Junho Jeong, Chae Yeong Lee, Hyunjoon Cho, Man Hwan Oh, Je Chul Lee, Jee‐Young Lee, Yangmee Kim   +7 more
wiley   +1 more source