Results 111 to 120 of about 22,198 (215)
Asteroid resource map for near-Earth space [PDF]
, 2011 Most future concepts for the exploration and exploitation of space require a large initial mass in low Earth orbit. Delivering this required mass from the Earth’s surface increases cost due to the large energy input necessary to move mass out of the ...
Sanchez Cuartielles, Joan-Pau +1 more
core +2 more sources
Risk Analysis, Volume 46, Issue 9, September 2026.ABSTRACT The Fermi paradox may partly reflect technological self‐destruction acting as a Great Filter during post‐industrial development. Because the empirical record consists of a single civilization observed over an eighty‐year nuclear age, the exercise reported here is best understood as a structured, historically anchored scenario analysis rather ...
Vincenzo Alfano
wiley +1 more source
Zygomatic Sialadenitis as a Rare Cause of Exophthalmos in a Dog
Veterinary Ophthalmology, Volume 29, Issue 5, September 2026.ABSTRACT Objective To describe the clinical presentation, diagnostic findings, and surgical management of zygomatic sialadenitis associated with retrobulbar disease in a dog following extensive dental extractions. Animals Studied A 10‐year‐old spayed female Cavalier King Charles Spaniel.
Katrina E. V. Jones +3 more
wiley +1 more source
Experimental Physiology, Volume 111, Issue 9, Page 4179-4194, 1 September 2026.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
Direct Detection of Hydrogen Reveals a New Macroscopic Crustal Water Reservoir on Early Mars
Geophysical Research Letters, Volume 53, Issue 16, 28 August 2026.Abstract The next great leap in Martian exploration is the return of samples to Earth. Maximizing their scientific value requires non‐destructive analytical techniques for early three‐dimensional characterization. Neutron computed tomography (CT), highly sensitive to hydrogen, complements conventional X‐ray CT and enables the detection of hydrous ...
Estrid Buhl Naver +15 more
wiley +1 more source
Advanced Synthesis &Catalysis, Volume 368, Issue 16, 18 August 2026.A Strecker‐type reaction of aromatic ortho‐diamines with various aldehydes and cyanide assembles the bicyclic amidine core of flavin‐derived heterocycles under mild conditions. Subsequent oxidation, radical or photochemical cyanation, carboxylation with CO2, and CO2‐mediated cyclization build the three‐ring alloxazine scaffold. This sequence provides a
Christian Held +2 more
wiley +1 more source
SPECTROPHOTOMETRIC STUDIES OF ASTEROIDS II: TAXONOMIC TYPE
Eurasian Physical Technical JournalAnalysis of spectral observations of a number of Main Belt asteroids, the Apollo family asteroid (NEO) 30825 (1990 TG1), and the rare asteroid 1951 Lick was used to determine their taxonomic types.
G.K. Aimanova +3 more
doaj +1 more source
Asteroid sample return missions are critical for understanding our Solar System. [PDF]
Nat CommunBates H.
europepmc +1 more source