 | Markarian 421 (Mrk 421, Mkn 421) is a blazar located in the constellation Ursa Major. The object is an active galaxy and a BL Lacertae object, and is a strong... 7 KB (565 words) - 11:55, 14 May 2023 |
 | The Cessna 421 Golden Eagle is an American six or seven seat twin-engined light transport aircraft, developed in the 1960s by Cessna as a pressurized version... 12 KB (1,235 words) - 07:24, 16 February 2024 |
was a region and a family of the old Armenia c. 400–800. The ruler in c. 420 was Narseh Djidjrakatsi. The family had the hegemony in Armenia 421 to 422... 392 bytes (44 words) - 19:26, 18 December 2021 |
No. 421 Squadron RCAF was a unit of the Royal Canadian Air Force. It was the last RCAF fighter squadron to be formed in the UK during World War II. Initially... 6 KB (451 words) - 12:59, 13 February 2024 |
 | 4 21 polytope (section 421 polytope) In 8-dimensional geometry, the 421 is a semiregular uniform 8-polytope, constructed within the symmetry of the E8 group. It was discovered by Thorold Gosset... 38 KB (2,556 words) - 12:06, 20 February 2024 |
 | The Córas Iompair Éireann 421 Class was a railway locomotive, built by the CIÉ at Inchicore Works between 1962–1963 and designed for branch line traffic... 4 KB (340 words) - 17:12, 8 April 2024 |
 | South Carolina Highway 421 (SC 421) is a 10.360-mile (16.673 km) state highway in the U.S. state of South Carolina. It is an alternate route to U.S. Route 1... 5 KB (271 words) - 17:59, 21 April 2024 |
pp. 201–203 Samar Habib, Islam and Homosexuality, ABC-CLIO, 2010, p. 421 Rand C. Lewis, The Neo-Nazis and German Unification, Greenwood Publishing Group... 9 KB (1,026 words) - 04:48, 23 February 2024 |
 | The Roman–Sasanian war of 421–422 was a conflict between the Eastern Roman Empire and the Sasanians. The casus belli was the persecution of Christians... 9 KB (1,152 words) - 03:22, 12 April 2024 |
Kepler-421 (KOI-1274 A) is a yellow main sequence star, being of spectral class G7V. Orange star of spectral class K9V (KOI-1274 B), projected on sky... 5 KB (422 words) - 03:56, 27 April 2024 |