Civil Rights
Movements, leaders, victories and the continuing fight for equality.
Explore the people, places, events, achievements, struggles and stories that shaped our journey.
Movements, leaders, victories and the continuing fight for equality.
Innovation, patents, science, technology and world-changing contributions.
Pioneers, champions, Negro Leagues, records, activism and excellence.
Meet the people whose lives, choices and achievements shaped the journey.
Black towns, communities, institutions and places where history happened.
Moments that changed communities, movements, institutions and the nation.
Wilmington, North Carolina once had a thriving Black middle class and an elected interracial government. In 1898 white supremacists used violence to overthrow that government, kill Black residents and drive many others from the city.
MORE →Reflects the personal views, recollections, and perspective of the author, Mike Davis.
This is a personal recollection on the Move fire on May 13, 1985
| HD1 | |
|---|---|
Three-color image of HD1, the most distant galaxy candidate to date, created using data from the VISTA telescope in Paranal Observatory. The red object in the center of the zoom-in image is HD1. | |
| Observation data (J2000 epoch) | |
| Constellation | Sextans[1][2] |
| Right ascension | 10h 01m 51.31s[1] |
| Declination | +02° 32′ 50.0″[1] |
| Redshift | 4.0[1] |
| Other designations | |
| [HIM2022] HD1 | |
HD1 is a high-redshift galaxy, which was once a candidate for the most distant known galaxies yet identified in the observable universe. From early data the redshift was estimated of approximately z=13.[3] Followup JWST spectroscopy found it to be an interloper, and is in fact a passive galaxy at a much lower redshift (z = 4.0).[4][5]
The discovery of HD1 (RA:10:01:51.31 DEC:+02:32:50.0) in the Sextans constellation,[1][2] along with another high-redshift galaxy, HD2 (RA:02:18:52.44 DEC:-05:08:36.1) in the Cetus constellation,[1][2] was reported by astronomers at the University of Tokyo on 7 April 2022. These two galaxies were found in two patches of sky surveyed by the Cosmic Evolution Survey and by the Subaru Telescope in the Subaru/XMM-Newton Deep Survey Field respectively. They were found by looking for objects that are much brighter in the so-called K band of infrared than in the H band (around 1.6 microns), which could indicate a Lyman-break galaxy red-shifted by a factor of around 13. In LBG searches, much lower redshift galaxies with Balmer breaks can be misidentified as higher redshift LBGs. As was the case for HD1 and HD2.[4][5] For this reason they were named "HD 1" and "HD 2" (for "H band dropout", not to be confused with stars HD 1 and HD 2 in the Henry Draper Catalog.[1]
Source: Wikipedia. Article content is retrieved live through the MediaWiki API.
HD1 is a high-redshift galaxy, which was once a candidate for the most distant known galaxies yet identified in the observable universe. From early data the redshift was estimated of approximately z=13. Followup JWST spectroscopy found it to be an interloper, and is in fact a passive galaxy at a much lower redshift (z = 4.0).
HD 1, also known as HIP 422, is a star in the Henry Draper Catalogue. HD1 or HD 1 may also refer to: HD1, the oldest and most distant known galaxy yet identified in the observable universe. Plectin, a giant protein found in mammalian cells, for which HD1 is an alias. TF1 Séries Films, formerly known as HD1. Hanriot HD.1, a French aircraft of World War I HD-1, a Chinese anti-ship missile
For other uses, see HD1 (disambiguation). HD-1 is a supersonic land-attack and anti-ship missile developed by Guangdong Hongda Mining Company. The HD-1 is powered by a ramjet engine and a solid rocket booster.
TF1 Séries Films, formerly HD1 (acronym for Histoire de), is a French TV channel, controlled by TF1 Group. HD1 launched on TNT, satellite, and xDSL on 12 December 2012.
Before the 1921 destruction of Tulsa’s Greenwood District, Black residents had created a remarkable center of business and community life. The district included stores, professional offices, entertainment venues and homes owned by Black citizens. Understanding Greenwood means learning what was built—not only what was burned.
MORE →Brown v. Board of Education in 1954.