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The spectral class of a star is a short code primarily summarizing the ionization state, giving an objective measure of the photosphere's temperature. Most stars are currently classified under the Morgan–Keenan (MK) system using the letters O, B, A, F, G, K, and M, a sequence from the hottest (O type) to the coolest (M type).
Van Maanen 2, or van Maanen's Star, is the closest known solitary white dwarf to the Solar System. It is a dense, compact stellar remnant no longer generating energy and has equivalent to about 68% of the Sun's mass but only 1% of its radius. [ 9 ]
variable star, ΔV = 0.007 m, P = 1.08 d HD 3924: 3924: 3334: 00 h 42 m 31.01 s +58° 45′ 12.4″ ...
The Alpha Centauri star system is the closest star system to the Sun. List of nearest M-type stars. This is a list of M-type stars ...
The acquisition of North Star Steel, located in Youngstown, Ohio, considerably strengthened the company's presence in the United States. [4] In June 2005, Vallourec gained full control of V&M Tubes by purchasing Mannesmann-Röhrenwerke's 45% stake in the company.
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The M. Star was damaged by an explosion on 27 July 2010, injuring one member of the ship's crew. [2] The UAE initially said the M. Star was damaged by a "freak wave" from an earthquake. [3] Mitsui officials said, however, that they believed the explosion was caused by a terrorist attack. [4]
By Thomas J. Sheeran YOUNGSTOWN, Ohio (AP) -- A rare sight in hard-luck Youngstown, a new industrial plant, has generated hope that a surge in oil and natural gas drilling across a multistate ...