Results 161 to 170 of about 128,595 (322)
Short Abstract The belief that we have to act now to avoid a future lost knowingly to self‐inflicted extinction operates through what I term ‘the extinction script’. As a technology of power that regulates climate futures, the extinction script implores the already threatened subject to act now and to do so urgently.
Amy Robson
wiley +1 more source
Period-Multiplying Bifurcations in the Gravitational Field of Asteroids
Periodic orbit families around asteroids serve as potential trajectories for space probes, mining facilities, and deep space stations. Bifurcations of these families provide additional candidate orbits for efficient trajectory design around asteroids ...
P. Rishi Krishna, Joel George Manathara
doaj +1 more source
The purpose of this task is to support asteroid research and the operation of an Asteroid Team within the Earth and Space Sciences Division at the Jet Propulsion Laboratory (JPL).
Matson, D. L.
core +1 more source
Abstract Purpose To describe the clinical features surgical technique, early and long‐term outcome with or without surgery, and histopathological findings of melanocytic anterior uveal lesions in young dogs. Methods Medical records of dogs at a guide dog facility removed from training due to a pigmented iris lesion were reviewed from 2014 to 2021 ...
Valerie Liliane Dufour+6 more
wiley +1 more source
Abstract An approximately 26‐year‐old, suspected female, red‐tailed hawk (Buteo jamaicensis) was presented with a history of chronic ocular changes of the left eye likely secondary to blunt trauma resulting in blindness and phthisis bulbi. Ophthalmic evaluation of OS revealed a large intraocular mass, 3+ aqueous flare indicating anterior uveitis, and ...
Taylr Wells+4 more
wiley +1 more source
Abstract Objective Cone‐rod dystrophy (cord1) is a form of progressive retinal atrophy. It is linked to an RPGRIP1 genetic variant which is the third most common canine disease variant thus far. While the variant affects various breeds, it is highly prevalent in English Springer Spaniels (ESSs).
Jennifer C. Kwok+5 more
wiley +1 more source
Assessment of Flyby Methods as Applied to Close Encounters among Asteroids
Orbital flybys have been extensively studied for spacecraft missions, resulting in effective mathematical and physical models. However, these models’ applicability to natural encounters involving asteroids has not been explored.
Nicolò Stronati+3 more
doaj +1 more source
Abstract Despite exercise countermeasures to sustain health and performance in spaceflight, complete maintenance of muscle mass and functions in microgravity is still not possible for most astronauts. The principal cause of the limited effectiveness of existing exercise countermeasures is the difficulty in achieving full loading forces in space.
Alessandra Bosutti+6 more
wiley +1 more source
Debris about asteroids: Where and how much? [PDF]
We summarize several recent findings on the size and shape of the region within which material can stably orbit an asteroid. If the asteroid (with assumed density 2.38 g/cu cm) circles the Sun at 2.55 AU, co-planar prograde material will remain trapped ...
Burns, Joseph A., Hamilton, Douglas P.
core +1 more source