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and Late (SBc). Examples are Sa - NGC 4594, Sb - NGC 2841, Sc - NGC 5457, SBa - NGC 2859, SBb - NGC 3351, and SBc - NGC 7479. Def. a "galaxy having a number...

"Irr". Examples are Sa - NGC 4594, Sb - NGC 2841, Sc - NGC 5457, SBa - NGC 2859, SBb - NGC 3351, SBc - NGC 7479, and Irr - NGC 4449. Def. a galaxy having...

shows the spectacular star-forming region known as the Flame Nebula, or NGC 2024, in the constellation of Orion (the Hunter) and its surroundings. In...

and south of NGC 7318a/b, while somewhat older star clusters, with ages between 10 and 500 Myr are in the young tidal tail and around NGC 7319. This is...

of the Northern Lights on Earth showing the very rare blue lights. File:NGC 7662 cyan.jpg In spacecraft propulsion, a Hall thruster is a type of ion...

and 12" S of the center of the apparent host galaxy NGC 4303. File:SN 1961F.jpg SN 1961F is in NGC 3003 at (J2000) RA 09:48:38.31 DEC +33:25:35.11. According...

Tetraoxygen (O4), a metastable form. "The Antennae Galaxies (also known as NGC 4038 and 4039) are a pair of distorted colliding spiral galaxies about 70...

in the constellation Cancer. The star is in NGC 2632 designated Haro, Chavira, and Gonzalez (HCG) 4. NGC 2632 is an open cluster, also called Messier...

detected in absorption towards NGC 6334I, and the 111 − 000 transition of para-H235Cl+ is detected in absorption towards NGC 6334I and Sgr B2(S)." "The [microwave]...

apparent superluminal motion in NGC 315. In both of these images the apparent motion is rectilinear or close to it. NGC 315 is a low-luminosity radio galaxy...

above NGC 4179 at 4 o'clock), labeled I, Titan: bright-outer moon (magnitude 8) at 3 o'clock, labeled T, Dione: 3 o'clock inner moon, labeled D, NGC 4179:...

Space Telescope, snapped this image of the planetary nebula, catalogued as NGC 6302, but more popularly called the Bug Nebula or the Butterfly Nebula. WFC3...

variable stars in NGC 4414, [...] an accurate determination of the distance to the galaxy [was made]." "The resulting distance to NGC 4414, 19.1 megaparsecs...

planetary nebulae ever seen, NGC 6543, nicknamed the "Cat's Eye Nebula." The image was taken on September 18, 1994. NGC 6543 is 3,000 light-years away...

activity of the supermassive black hole at the core of Perseus' central galaxy, NGC 1275." "And the bay's shape doesn't match those predicted by computer models...

estimated to hold about 400 billion stars." "A small, companion galaxy called NGC 205 is visible above Andromeda. Another companion galaxy called M32 can also...

originates. If a coronal cloud, the cloud is more than 15 kpc from the plane of NGC 3067. This distance is greater than the optical radius of the galaxy, 9.6...

1998, ch. 2.3.2, pp. 53 H. M. Johnson & D. E. Hogg (October 1965). "NGC 2359, NGC 6888, and Wolf-Rayet Stars". The Astrophysical Journal 142 (10): 1033-40...

close (contact) binary in the extremely young galactic cluster Córdoba XXVI (NGC 2944)." In 1928-30, "from ten light minima ... a (half) period P = 0.395790...

above NGC 4179 at 4 o'clock), labeled I, Titan: bright-outer moon (magnitude 8) at 3 o'clock, labeled T, Dione: 3 o'clock inner moon, labeled D, NGC 4179:...