🌌 SpacePicture of a Day: Mystery: Little Red Dots in the Early Universe 🪐

in #science2 days ago

Mystery: Little Red Dots in the Early Universe


What are these little red dots (LRDs)? Nobody knows. Discovered only last year, hundreds of LRDs have now been found by the James Webb Space Telescope in the early universe. Although extremely faint, LRDs are now frequently identified in deep observations made for other purposes. A wide-ranging debate is raging about what LRDs may be and what importance they may have. Possible origin hypotheses include accreting supermassive black holes inside clouds of gas and dust, bursts of star formation in young dust-reddened galaxies, and dark matter powered gas clouds. The highlighted images show six nearly featureless LRDs listed under the JWST program that found them, and z, a distance indicator called cosmological redshift. Additionally, searches are underway in our nearby universe to try to find whatever previous LRDs might have become today.


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12

NameCraft
Oleg KononenkoISS
Nikolai ChubISS
Tracy Caldwell DysonISS
Matthew DominickISS
Michael BarrattISS
Jeanette EppsISS
Alexander GrebenkinISS
Butch WilmoreISS
Sunita WilliamsISS
Li GuangsuTiangong
Li CongTiangong
Ye GuangfuTiangong
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