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Astronomy on Mars
Astronomy on Mars is the observation of celestial phenomena from the Martian surface, where the moons Phobos and Deimos cause frequent partial solar eclipses and rovers have photographed them since 2004.
Astroparticle physics
Astroparticle physics, also called particle astrophysics, studies high-energy particles and radiation of cosmic origin, using cosmic rays, neutrinos, gamma rays, and gravitational waves as messengers from the universe.
Astropecten
Astropecten (Gray, 1840) is a species-rich genus of soft-bottom sea stars in the order Paxillosida, with over 150 described species worldwide, known for morphological convergence, species complexes, and difficult taxonomy.
Astropecten articulatus
Astropecten articulatus, the royal sea star (basionym Asterias articulata), is a western Atlantic Astropectinidae sea star from North Carolina to Uruguay, living on sandy and muddy bottoms from 0 to 550 m, most common at 5–20 m.
Astrophil and Stella
Astrophil and Stella is a sonnet sequence by Sir Philip Sidney, 108 sonnets and eleven songs composed in the early 1580s and first printed in 1591.
Astrophile (คืนนับดาว)
Astrophile (คืนนับดาว) is a 2022 Thai GMM TV romantic comedy-drama on GMM25, 18 episodes, directed by Koo Ekkasit Trakulkasemsuk, starring Vachirawit Chivaaree and Davika Hoorne, adapted from Duangmaan's novel คิมหันต์พันดาว.
Astrophotography
Astrophotography is the photography of astronomical objects and the night sky, including the Moon, planets, stars, nebulae, and galaxies. It began as a scientific tool in the 19th century.
Astrophysical and cosmological constraints on WISPs
Astrophysical and cosmological constraints on WISPs covers how stellar cooling, supernova 1987A, cosmic microwave background data, and black-hole superradiance bound axion-like particles, hidden photons, and other very light particles.
Astrophysical Journal
The Astrophysical Journal (ApJ) is a peer-reviewed astronomy and astrophysics journal founded in 1895 by George Ellery Hale and published by the American Astronomical Society since fully open access in 2022.
Astrophysical Multimessenger Observatory Network
The Astrophysical Multimessenger Observatory Network (AMON) is a Penn State-based program linking high-energy observatories worldwide to detect cosmic transients through photons, neutrinos, cosmic rays, and gravitational waves.
Astrophysical neutrino production and propagation
Astrophysical neutrino production and propagation is the branch of neutrino astrophysics describing how cosmic-ray interactions in astrophysical sources create neutrinos, which travel to detectors on Earth.
Astrophysical tests of Lorentz violation
Astrophysical tests of Lorentz violation are observations of high-energy photons, neutrinos, and cosmic rays from cosmological distances used to detect or bound any departure from Lorentz invariance.
Astrophysics
Astrophysics is the branch of astronomy that applies physics and chemistry to explain the physical nature, composition, and evolution of celestial bodies, rather than merely measuring their positions and motions.
Astrophysics Data System
The Astrophysics Data System, or ADS, is a digital library portal for astronomy and physics researchers, run by the Smithsonian Astrophysical Observatory under a NASA agreement since 1992.
Astrophytum capricorne
Astrophytum capricorne, the goat's horn cactus, is a globose NE Mexican cactus with white-flecked 7-9-ribbed stems, twisted goat-horn-like spines, and large yellow red-throated summer flowers; IUCN least concern, CITES Appendix II, RHS AGM.
Astropolis Festival
Astropolis is an electronic music festival in Brest, Brittany, France, founded in 1995 as a clandestine rave at Kernouës and described as the oldest French electronic music festival.
Astropy
Astropy is a community-driven, open-source Python package for astronomy that handles data formats like FITS, celestial coordinates, and physical units; planned in 2011, it first released in 2013.
Astros II
The Astros II is a Brazilian self-propelled multiple rocket launcher built by Avibras, mounted on a 6x6 truck and firing unguided rockets of several calibers to 80 km.
AstroSat
AstroSat is India's first dedicated multi-wavelength space astronomy observatory, operated by ISRO and launched on 28 September 2015, making India the fifth entity to operate a space-based astronomical observatory.
Astroscale
Astroscale Holdings (株式会社アストロスケールホールディングス) is a Tokyo-based space debris removal company founded by Mitsunobu Okada in Singapore in 2013, listed on the Tokyo Stock Exchange since 2024.
Astrotactin
Astrotactin (ASTN1) is a vertebrate-specific neuronal membrane glycoprotein receptor for glial-guided neuronal migration; its partner ASTN2 regulates its trafficking, and bi-allelic ASTN1 variants cause autosomal-recessive neurodevelopmental disorders.
AstroTurf
AstroTurf, originally ChemGrass, is a brand of synthetic turf developed by Monsanto and first installed at scale in the Houston Astrodome in 1966, later becoming a generic term for artificial grass.
Astroturfing
Astroturfing is the practice of disguising a coordinated, sponsor-funded campaign as a spontaneous grassroots movement, through front groups, forged comments, or coordinated social media accounts, notably in climate politics and elections.
Astroworld (album)
Astroworld (2018) is American rapper Travis Scott's third studio album, released via Cactus Jack/Grand Hustle and Epic. Named for Houston's closed Six Flags AstroWorld park, it topped the Billboard 200 with 537,000 units, went triple platinum, scored 85 on Metacritic, and spawned Sicko Mode.
Astroworld Festival
Astroworld Festival: Travis Scott's annual Houston hip-hop festival at NRG Park (2018, 2019, 2021). Its November 5, 2021 crowd crush killed 10 people aged 9 to 27, prompting a Texas concert-safety task force, a 1,300-page police report, and mass litigation.
Astroworld Festival crowd crush
Astroworld Festival crowd crush: November 5, 2021 crowd surge at Travis Scott's festival at NRG Park, Houston, killing 10 by compression asphyxia; grand jury no-billed all defendants in 2023.
Astrud Gilberto
Astrud Gilberto (Astrud Weinert, 1940–2023), Brazilian bossa nova singer, former wife of João Gilberto; her uncredited English vocals on "The Girl from Ipanema" (Getz/Gilberto, 1963) became a 1964 million-selling Top Five US hit and defined the genre's whispery style.
Astuprotimut-r
Astuprotimut-r (GSK1572932A, recombinant MAGE-A3 ASCI) is GSK's MAGE-A3 protein cancer vaccine with AS15 adjuvant; its phase III MAGRIT and DERMA trials failed to improve disease-free survival.
Astur (bird)
Astur (Lacépède, 1799), northern goshawks and allies, a revived genus of Accipitridae hawks holding nine species such as Astur gentilis and A. atricapillus, split from Accipiter after phylogenetic evidence of its non-monophyly.
Astura
Astura (Torre Astura): island and river mouth on the Latium coast near Nettuno, Italy; site of Cicero's villa, an imperial retreat, a Via Severiana station, and the medieval tower where Conradin of Swabia was betrayed in 1268.