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NGC 6934
NGC 6934, also known as Caldwell 47, is a globular star cluster in the constellation Delphinus about 50,000 light-years from Earth, discovered by William Herschel in 1785 and rich in RR Lyrae variable stars.
NGC 6946
NGC 6946, also called Caldwell 12 or the Fireworks Galaxy, is a face-on spiral galaxy about 22 to 25 million light-years away, discovered by William Herschel in 1798.
NGC 7006
NGC 7006, also known as Caldwell 42, is a distant globular cluster in the constellation Delphinus, discovered by William Herschel in 1784 and about 135,000 light-years from Earth.
NGC 7009
NGC 7009, called the Saturn Nebula, is a planetary nebula in the constellation Aquarius, whose bright knots, or ansae, resemble Saturn's rings; William Herschel discovered it in 1782.
NGC 7023
NGC 7023, also known as the Iris Nebula and Caldwell 4, is a blue reflection nebula in Cepheus, about 1,400 light-years away, illuminated by the star HD 200775.
NGC 7026
NGC 7026, also called the Cheeseburger Nebula, is a bipolar planetary nebula in Cygnus about 6800 light years away, formed from gas shed by a dying star.
NGC 7027
NGC 7027, cataloged as PN G084.9-03.4, is a young, dusty, carbon-rich planetary nebula in Cygnus about 3,000 light-years away, found by Édouard Stephan in 1878.
NGC 7331
NGC 7331, also cataloged as Caldwell 30, is an unbarred spiral galaxy in Pegasus about 45 million light-years away, often described as a near twin of the Milky Way.
NGC 7332
NGC 7332 is a nearly edge-on lenticular galaxy in Pegasus, about 40 million light-years away, known for its counter-rotating gas and close pairing with NGC 7339.
NGC 7469
NGC 7469 is a barred spiral Seyfert 1 galaxy in Pegasus about 220 million light-years away, one of the original six Seyfert galaxies, interacting with IC 5283.
NGC 752
NGC 752, also cataloged as Caldwell 28, is an intermediate-age open cluster in Andromeda, about 1.3 billion years old and roughly 440 parsecs from the Sun.
NGC 7538
NGC 7538, also cataloged as Sh2-158, is an emission nebula and active star-forming region in the constellation Cepheus, about 8,800 light-years away, recorded by William Herschel in 1787.
NGC 7619
NGC 7619 is an elliptical galaxy in the constellation Pegasus and one of the two dominant members of the Pegasus I group, about 185 million light-years away.
NGC 7662
NGC 7662, also cataloged as Caldwell 22 and nicknamed the Blue Snowball Nebula, is a blue-green planetary nebula in Andromeda about 2,500 light-years away, discovered by William Herschel in 1784.
NGC 7789
NGC 7789, popularly known as Caroline's Rose, is a rich, intermediate-age open star cluster in Cassiopeia discovered by Caroline Herschel in 1783, lying about 6,700 light-years from the Sun.
NGC 7793
NGC 7793, also called Bond's Galaxy, is a flocculent spiral galaxy in the constellation Sculptor, one of the brightest members of the nearby Sculptor Group, about 12 million light-years away.
NGC 869
NGC 869, also called h Persei, is a bright open cluster of young stars in the constellation Perseus, the western half of the famous Double Cluster with NGC 884.
Ngô Bảo Châu
Ngô Bảo Châu, born in Hanoi in 1972, is a Vietnamese mathematician who proved the fundamental lemma in automorphic forms, winning the 2010 Fields Medal.
NGRIP (ice core)
NGRIP, or North Greenland Ice Core Project, is a 3,085-meter ice core drilled in northwestern Greenland from 1996 to 2003, providing the only continuous Greenlandic record of the Eemian interglacial.
NHC radical organocatalysis
NHC radical organocatalysis is a branch of N-heterocyclic carbene catalysis in which carbene-derived intermediates react by single-electron transfer to form radicals, first reported in 2001 and combined with photoredox catalysis by Rovis in 2012.
Ni-Bi oxygen evolution catalyst
Ni-Bi (nickel-borate) is an amorphous thin-film electrocatalyst for the oxygen evolution reaction, electrodeposited from borate electrolyte at pH 9.2, reported at MIT in 2010 by Dincă, Surendranath, and Nocera.
Ni–Ga methanol synthesis catalyst
The Ni–Ga methanol synthesis catalyst is a nickel–gallium alloy, most prominently Ni₅Ga₃, that hydrogenates carbon dioxide to methanol with high selectivity, identified computationally in 2014.
Ni–Mo sulfide hydrogen evolution catalyst
A Ni–Mo sulfide hydrogen evolution catalyst is a nickel–molybdenum sulfide electrocatalyst that speeds the hydrogen evolution reaction in alkaline water electrolysis, offering a cheap alternative to platinum.
Ni–N–C catalysts for CO2 electroreduction to CO
Single-atom Ni–N–C catalysts are electrocatalysts in which isolated nickel atoms coordinated by nitrogen sit in a carbon matrix, reducing CO2 chiefly to carbon monoxide with high selectivity.
Ni2P nickel phosphide
Nickel phosphide (Ni2P) is a compound of nickel and phosphorus with a hexagonal Fe2P-type structure, valued as a hydrotreating catalyst and for hydrogen evolution in water electrolysis.
Ni2P/Ni5P4 phosphide HER catalysts
Ni2P/Ni5P4 phosphide HER catalysts are dual-phase nickel phosphide heterostructures that catalyze the hydrogen evolution reaction of water electrolysis, beating either single phase through faster interface charge transfer and more active sites.
Ni3(HITP)2
Ni3(HITP)2 is a two-dimensional conductive metal-organic framework in which nickel ions link HITP ligands into stacked honeycomb sheets; first reported at MIT in 2014, it set conductivity records for porous materials.
Nialamide
Nialamide (Niamid) is a hydrazine-derived, non-selective monoamine oxidase inhibitor marketed by Pfizer as one of the first antidepressant drugs from 1959 until its withdrawal in 1963 over food-interaction side effects.
Nian Lin
Nian Lin (林念) is a surface physicist, a professor at the Hong Kong University of Science and Technology since 2007, known for single-molecule Kondo physics and on-surface metal–organic frameworks.
Nibiru cataclysm
The Nibiru cataclysm, also called the Nibiru collision, is a claimed doomsday scenario in which planet Nibiru destroys civilization; astronomers say no such object exists.