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A vertical service code (VSC) is a sequence of digits and the signals star (*) and pound/hash (#) dialed on a telephone keypad or rotary dial to access certain telephone service features. [1] Some vertical service codes require dialing of a telephone number after the code sequence. On a touch tone telephone, the codes are usually initiated with ...
Stellar classification. In astronomy, stellar classification is the classification of stars based on their spectral characteristics. Electromagnetic radiation from the star is analyzed by splitting it with a prism or diffraction grating into a spectrum exhibiting the rainbow of colors interspersed with spectral lines.
star operator ⋆: U+22C6 APL functional symbol circle star ⍟ U+235F APL functional symbol star diaeresis ⍣ U+2363 black star ★ U+2605 white star ☆ U+2606 star and crescent: ☪: U+262A outlined white star ⚝ U+269D pentagram ⛤ U+26E4 right-handed interlaced pentagram ⛥ U+26E5 left-handed interlaced pentagram ⛦ U+26E6 inverted ...
In 2016, the International Astronomical Union (IAU) organized a Working Group on Star Names (WGSN) [2] to catalog and standardize proper names for stars. The WGSN's first bulletin, dated July 2016, [3] included a table of 125 stars comprising the first two batches of names approved by the WGSN (on 30 June and 20 July 2016) together with names of stars adopted by the IAU Executive Committee ...
The U.S. Code explicitly limits the total number of four-star officers that may be on active duty at any given time. The total number of active-duty general or flag officers is capped at 219 for the Army, 150 for the Navy, 171 for the Air Force, 64 for the Marine Corps, and 21 for the Space Force. [ 65 ]
Last-call return, automatic recall, or (on PBX and centrex service) camp-on, is a telecommunication feature offered by telephony service providers to subscribers to provide the subscriber with the telephone number, and sometimes the time, of the last caller. The service may also offer the facility to place a call to the calling party.
Lewis is the Founder of Beatrice Advisors, an independent, woman- and minority-owned multi-family office, that she launched in June 2024. [7] It is the first business of its kind owned by a Black woman. In 2020, Christina founded Giving Gap (formerly Give Blck) a nationally-recognized platform that has channeled millions of dollars to Black ...
The R136a system at the core of R136 is a dense luminous knot of stars containing at least 12 stars, [11] the most prominent being R136a1, R136a2, and R136a3, all of which are extremely luminous and massive WN5h stars. R136a1 is separated from R136a2, the second brightest star in the cluster, by 5,000 AU.