All articles starting with a number or symbol
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239 Adrastea
239 Adrastea (A884 QA) is a roughly 40 km main-belt asteroid discovered by Johann Palisa at Vienna on 18 August 1884, orbiting the Sun every 5.12 years and rotating in 18.47 hours; the name is also borne by Jupiter's moon Jupiter XV.
23andMe
23andMe is an American direct-to-consumer genetic testing company founded in 2006. After Chapter 11 bankruptcy in 2025, its assets were sold to TTAM Research Institute for $305 million.
23andMe data leak
The 23andMe data leak was a 2023 breach in which attackers used credential stuffing to take over about 14,000 accounts and harvest profile data of roughly 6.9 million users.
23S ribosomal RNA
23S ribosomal RNA is the large-subunit rRNA of bacterial and archaeal ribosomes, about 2,900 nt, forming the peptidyl transferase center; its eukaryotic homolog is 28S rRNA, and its nucleotides are key antibiotic-resistance targets.
23XI Racing
23XI Racing ("twenty-three eleven"), NASCAR Cup Series team co-owned by Michael Jordan, Denny Hamlin, and Curtis Polk, founded 2020, Toyota-backed, debuted 2021 with Bubba Wallace; won 2026 Daytona 500 and settled 2025 antitrust case for permanent charters.
24 (2016 film)
24 (2016) is a Tamil-language science fiction thriller directed by Vikram Kumar, starring Suriya in a triple role as scientist Sethuraman, villain Athreya, and son Mani, with Samantha and Nithya Menen; A. R. Rahman scored it, released 6 May 2016.
24 (Indian TV series)
24 is a Hindi-language Indian action thriller series adapted from the American series, starring Anil Kapoor as anti-terror chief Jai Singh Rathod, aired on Colors TV from 2013.
24 (TV series)
24 is a Fox real-time action thriller created by Joel Surnow and Robert Cochran (2001–2010, 8 seasons), starring Kiefer Sutherland as CTU agent Jack Bauer, with each season covering one day in 24 episodes; Emmys include 2006 Outstanding Drama Series.
24 Boo
24 Boo (24 Boötis) is an evolved G3 IV subgiant about 96 parsecs away in Boötes with one confirmed gas giant, 24 Boo b, a 0.883-0.91 Jupiter-mass planet on a 30.35-day, 0.19 au orbit found by radial velocity in 2018.
24 Caprices for Solo Violin (Paganini)
The 24 Caprices for Solo Violin are unaccompanied violin pieces by Niccolò Paganini, composed around 1801 to 1807 and regarded as a milestone of violin technique.
24 City (二十四城记)
24 City (二十四城记) is Jia Zhangke's 2008 Chinese docufiction film about Factory 420 in Chengdu, demolished for a luxury apartment complex, mixing five real worker interviews with four fictional monologues by actors including Joan Chen and Zhao Tao.
24 epibrassinolide
24-Epibrassinolide, also known as EBR, is a naturally occurring C28H48O6 brassinosteroid, a plant hormone widely used in laboratory studies and approved for use in crop production.
24 Hour Fitness
24 Hour Fitness is an American gym chain founded by Mark Mastrov in 1983, with about 240 clubs in nine states and dues starting around $25 monthly.
24 Hour Party People
24 Hour Party People: 2002 Michael Winterbottom comedy-drama, written by Frank Cottrell-Boyce, starring Steve Coogan as Tony Wilson of Factory Records and the Haçienda, covering Manchester music 1976–1992; 4K re-release October 2026.
24 Hours of Daytona
The 24 Hours of Daytona, now the Rolex 24 At Daytona, is a 24-hour IMSA sports car endurance race at Daytona International Speedway, Florida; first run 1962 as the three-hour Daytona Continental, 24 hours since 1966, part of endurance racing's Triple Crown.
24 Hours of Le Mans
24 Hours of Le Mans (24 Heures du Mans): annual 24-hour endurance sports car race near Le Mans, France, first run 26-27 May 1923 by the ACO; won by distance covered, run in Hypercar, LMP2, and LMGT3 classes, and a proving ground for automotive technology.
24 in 24: Last Chef Standing
24 in 24: Last Chef Standing is a Food Network cooking competition hosted by Michael Symon and Esther Choi in which 24 chefs face 24 challenges over 24 nonstop hours across eight skill-based shifts; it premiered April 14, 2024, with prizes rising from $50,000 to $100,000 by season 3.
24 in 24: Last Chef Standing series 1
Season 1 of 24 in 24: Last Chef Standing, Food Network's 2024 competition where Michael Symon and Esther Choi host 24 chefs through 24 challenges in 24 nonstop hours across eight shifts; Marcel Vigneron won $50,000 and a Hawaii trip, beating Carlos Anthony.
24 in 24: Last Chef Standing series 2
Season 2 of 24 in 24: Last Chef Standing, the Food Network competition hosted by Michael Symon and Esther Choi, aired April 27 to May 25, 2025: 24 chefs, 24 challenges, 24 hours, $75,000, won by Jonathon Sawyer.
24 Oras
24 Oras is GMA Network's flagship Filipino evening newscast, premiering March 15, 2004 with Mel Tiangco and Mike Enriquez; now anchored by Tiangco, Vicky Morales, and Emil Sumangil, it was the Philippines' top TV program of 2023.
24 Sex
24 Sex (24 Sextantis, HD 90043): a G-type subgiant 72 pc away with two Jupiter-mass planets found by radial velocity in 2010, locked in a 2:1 mean-motion resonance with mutually crossing orbits.
24 Sussex Drive
24 Sussex Drive, Ottawa: official residence of Canada's prime minister since 1950. Built 1868 by Joseph Merrill Currier; classified heritage building (1986); vacant since 2015, in critical condition, with a restoration competition announced in 2026.
24-cell
The 24-cell is a regular convex 4-polytope with 24 octahedral cells, 24 vertices, and 96 edges, the unique self-dual regular four-dimensional polytope, classified by Ludwig Schläfli.
24-Dehydrocholesterol reductase
24-Dehydrocholesterol reductase (DHCR24, seladin-1) is a human FAD-dependent enzyme, EC 1.3.1.72, that reduces the delta-24 bond of sterols, converting desmosterol to cholesterol; mutations cause desmosterolosis.
24-hour analog dial
A 24-hour analog dial is a clock or watch dial marked with 24 hours spaced 15 degrees apart, so the hour hand completes only one revolution per day.
24-hour clock
The 24-hour clock is a timekeeping convention in which the day runs from midnight to midnight, divided into hours numbered 00 to 23, so 2:30 PM is written 14:30.
24: Legacy
24: Legacy is a 2017 Fox spin-off/reboot of the series 24, created by Manny Coto and Evan Katz, starring Corey Hawkins as Army Ranger Eric Carter with Miranda Otto; 12 real-time episodes, canceled after one season.
24: Live Another Day
24: Live Another Day (Day 9, Season 9) is Fox's 12-episode 2014 event series reviving 24, set in London four years after season 8, with Kiefer Sutherland returning as fugitive Jack Bauer; premiered May 5, 2014 to 8 million viewers.
24: Redemption
24: Redemption is a 2008 American TV film bridging seasons 6 and 7 of 24, directed by Jon Cassar, written by Howard Gordon, starring Kiefer Sutherland as Jack Bauer in fictional Sangala, aired November 23, 2008 on Fox.
24/7 service
24/7 service, also called twenty-four seven or around-the-clock service, is service available at all hours, delivered by continuous staffing, on-call staff who can be summoned, or automated self-service.