File:Double Quasars (2021-014).png

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Hubble Resolves Two Pairs of Quasars

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DescriptionDouble Quasars (2021-014).png	English: Hubble Resolves Two Pairs of Quasars
Date	Taken in 2021
Source	Double Quasars
Author	IMAGE: NASA, ESA, Hsiang-Chih Hwang (JHU), Nadia Zakamska (JHU), Yue Shen (UIUC)
Other versions	TIF version

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Author	Space Telescope Science Institute Office of Public Outreach
Image title	Inhabitants of our Milky Way galaxy living several billion years from now will have a markedly different-looking sky overhead. Two brilliant objects, each as bright as the full Moon or brighter, will drown out the stars with their radiance. These giant blazing light bulbs are a pair of quasars, brought to life by the collision of our Milky Way with the neighboring Andromeda galaxy.Quasars are ignited by monster black holes voraciously feeding on infalling matter, which unleashes a torrent of radiation. The Milky Way and Andromeda have such black holes at their hearts, which are now sleeping giants. That is, until the big bang-up. The duo will be as deadly then as it is dazzling. Blistering radiation from the quasar pair might sterilize the surfaces of planets, wiping out innumerable extraterrestrial civilizations.This tale of "death star" dueling quasars looming in the sky might seem like a scene out of a science fiction movie. But the real universe is stranger than fiction. This is actually a story that played out between pairs of galaxies that existed long ago and far away. Two quasar pairs photographed by Hubble existed 10 billion years ago, during the peak epoch of galaxy close encounters. The discovery offers a unique way to probe collisions among galaxies in the early universe that might otherwise have gone undetected. Ancient quasars are scattered all across the heavens, so finding these dynamic duos is fortuitous. Astronomers estimate only one in a thousand quasars are really double quasars.
Short title	Hubble Spots Double Quasars in Merging Galaxies
Headline	Seeing Dual Quasars Is Like Finding a Needle in a Haystack
Source	STScI
Usage terms	http://hubblesite.org/copyright/
Date and time of data generation	22 March 2021
Color space	sRGB
Exif version	2.31
Image width	1,860 px
Image height	920 px
Bits per component	8 8 8
Height	920 px
Width	1,860 px
Pixel composition	RGB
Number of components	3
Horizontal resolution	71.98 dpi
Vertical resolution	71.98 dpi
Contact information	outreach@stsci.edu http://hubblesite.org 3700 San Martin Drive Baltimore, MD, 21218 USA 410-338-4444
Keywords	J0749+2255 J0841+4825
Date metadata was last modified	13:05, 16 March 2021
Unique ID of original document	45276B5730CDFB393995E932743763D6
File change date and time	11:58, 16 March 2021

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