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NGC 2023 is an emission and reflection nebula in the equatorial constellation of Orion. It was discovered by the German -born astronomer William Herschel on 6 January 1785. This reflection nebula is one of the largest in the sky, [ 4 ] with a size of 10 × 10 arcminutes . [ 3 ]
The Horsehead Nebula (also known as Barnard 33 or B33) is a small dark nebula in the constellation Orion. [2] The nebula is located just to the south of Alnitak , the easternmost star of Orion's Belt , and is part of the much larger Orion molecular cloud complex .
IC 434 is a bright emission nebula in the equatorial constellation of Orion.It was discovered on February 1, 1786 by German-British astronomer William Herschel. [2] The nebula is located at a distance of approximately 1,260 ly (385 pc) from the Sun and spans the interior of a neutral hydrogen shell with an angular size of 2° × 4°.
SN 2023rve is a type II supernova that happened in the 10th magnitude barred spiral galaxy NGC 1097 on September 8, 2023. [1] Scientists from the McDonald Observatory in the state of Texas, United States, have observed the supernova and conducted photometric measurements, they described it to be the brightest supernova in the sky as of September 12, 2023.
The supernova is located near a prominent HII region, NGC 5461, in an outer spiral arm of the bright galaxy. [3] By 22 May 2023, SN 2023ixf had brightened to about magnitude 11. [5] [6] It could be seen in telescopes as small as 114 mm (4.5 in) [3] and remained visible with backyard telescopes for several months. [10]
NGC 3132 (also known as the Eight-Burst Nebula, [2] the Southern Ring Nebula, [2] or Caldwell 74) is a bright and extensively studied planetary nebula in the constellation Vela. Its distance from Earth is estimated at 613 pc or 2,000 light-years .
December 2023 Mercury Retrograde. Mercury, the planet of communication, stations retrograde in Capricorn from December 13, 2023, until January 1, 2024, and it could complicate your end-of-year plans.
NGC 4995 is a "moderately bright and large galaxy" in the constellation Virgo. It is a member of the NGC 4995 Group of galaxies, which is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster. Supernova SN 2023gfo was discovered on 20 April 2023 (Type II, mag 16.2).