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The object itself was detected in ESO images dating back to 1980, but its identification as a quasar occurred only several decades later. [2]An automated analysis of 2022 data from the European Space Agency's Gaia satellite did not confirm J0529-4351 as too bright to be a quasar, and suggested it was a 16th magnitude star with a 99.98% probability.
This indicates that C/2014 UN 271 was at its furthest distance, or aphelion, of 40,000 AU (0.6 ly) in the Oort cloud around 1.4 million years ago. [ 4 ] [ a ] [ m ] It will come to perihelion (closest approach to the Sun) around 23 January 2031 at a distance of 10.95 AU (1.6 billion km; 1.0 billion mi), [ 6 ] just outside the aphelion of Saturn ...
With a radiated isotropic-energy of around 1.2×10 55 erg [9] or even 3×10 55 erg, [55] to as high as 1.4×10 57 erg, [56] GRB 221009A, together with events such as 1.5×10 53 AT 2021lwx, the 10 61 erg MS 0735.6+7421 event, and the 5×10 61 erg Ophiuchus Supercluster eruption, are among the most energetic events ever.
1.34 parsecs (4.4 ly) This was the third star whose parallax was determined. Before Alpha Centauri, the record was held by 61 Cygni, the first star whose parallax was determined. [NB 1] [NB 2] [NB 3] Nearest normal star Alpha Centauri C (Proxima Centauri) 1915 1.30 parsecs (4.2 ly) Before Proxima, the title had been held by Alpha Centauri A & B.
It was first detected on June 14, 2015, located within a faint galaxy in the southern constellation Indus, and was the most luminous supernova-like object ever observed. [4] At its peak, ASASSN-15lh was 570 billion times brighter than the Sun, and 20 times brighter than the combined light emitted by the Milky Way Galaxy . [ 4 ]
The brightest gamma ray burst ever detected recently reached our planet. It’s 70 times longer than any other burst we’ve spotted, and effectively blinded our instruments when it hit ...
Size comparison of the event horizons of the black holes of TON 618 and Phoenix A.The orbit of Neptune (white oval) is included for comparison. As a quasar, TON 618 is believed to be the active galactic nucleus at the center of a galaxy, the engine of which is a supermassive black hole feeding on intensely hot gas and matter in an accretion disc.
SN 2016aps (also known as PS16aqy and AT2016aps) is the brightest and most energetic supernova explosion ever recorded. [2] [3] It released more energy than ASASSN-15lh. [4]In addition to the sheer amount of energy released, an unusually large amount of the energy was released in the form of radiation, probably due to the interaction of the supernova ejecta and a previously lost gas shell.