WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
WikiVisually
The entire wiki reimagined as a visual magazine with video discovery · Watch your interests come alive
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Sloan Digital Sky Survey
Videos
The Sloan Digital Sky Survey is a major multi-spectral imaging and spectroscopic redshift survey using a dedicated 2.5-m wide-angle optical telescope at Apache Point Observatory in New Mexico, United
NGC 5681, a galaxy that was imaged during the survey
NGC 5681, a galaxy that was imaged during the survey
SDSS imaging camera
SDSS imaging camera
SDSS spectroscope cartridge
SDSS spectroscope cartridge
Aluminum plate close-up showing optical fibers
Aluminum plate close-up showing optical fibers
Quasar
Videos
A quasar is an extremely luminous active galactic nucleus. It is sometimes known as a quasi-stellar object, abbreviated QSO. The emission from an AGN is powered by accretion onto a supermassive black
Sloan Digital Sky Survey
…4 million objects. The main galaxy sample has a median redshift of z = 0.1; there are redshifts for luminous red galaxies as far as z = 0.7, and for quasars as far as z = 5; and the imaging survey has been involved in the detection of quasars beyond a redshift z = 6. Data release 8 (DR8), released in January…
Artist's image of the accretion disc in ULAS J1120+0641, a very distant quasar containing a supermassive black hole with a mass two billion times that
Artist's image of the accretion disc in ULAS J1120+0641, a very distant quasar containing a supermassive black hole with a mass two billion times that of the Sun
The Chandra X-ray image of PKS 1127-145, a quasar about 10 billion light-years from Earth. An X-ray jet extends at least a million light-years from th
The Chandra X-ray image of PKS 1127-145, a quasar about 10 billion light-years from Earth. An X-ray jet extends at least a million light-years from the quasar. Image is 60 arcseconds on a side. RA 11h 30m 7.10s Dec −14° 49' 27" in Crater. Observation date: May 28, 2000. Instrument: ACIS
Hubble images of quasar 3C 273. At right, a coronagraph blocks the quasar's light, making it easier to see the surrounding host galaxy.
Hubble images of quasar 3C 273. At right, a coronagraph blocks the quasar's light, making it easier to see the surrounding host galaxy.
A cosmic mirage known as the Einstein Cross. Four apparent images are actually from the same quasar.
A cosmic mirage known as the Einstein Cross. Four apparent images are actually from the same quasar.