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The Ring Nebula (also catalogued as Messier 57, M57 and NGC 6720) is a planetary nebula in the northern constellation of Lyra. [4] C] Such a nebula is formed when a star, during the last stages of its evolution before becoming a white dwarf , expels a vast luminous envelope of ionized gas into the surrounding interstellar space .
Splayed arch tops the splayed window opening. In architecture, a splayed opening is a wall opening that is narrower on one side of the wall and wider on another. When used for a splayed window, it allows more light to enter the room. In fortifications, a splayed opening is used to broaden the arc of fire (cf. embrasure, loophole). [1]
Charles Messier. The first edition of 1774 covered 45 objects (M1 to M45).The total list published by Messier in 1781 contained 103 objects, but the list was expanded through successive additions by other astronomers, motivated by notes in Messier's and Méchain's texts indicating that at least one of them knew of the additional objects.
PGT Innovations Inc (NYSE: PGTI) agreed to acquire Anlin Industries, also known as Anlin Windows & Doors, for a purchase price of ~$126 million. The Clovis, California-based Anlin, a brand for ...
An American Airlines flight departing New York's LaGuardia Airport on Thursday evening had to divert to nearby John F. Kennedy International shortly after takeoff after a reported bird strike ...
3. #9 Tennessee at #8 Ohio State Line: Ohio State -7.5. The potential: Speaking of more to lose … Ryan Day might just be coaching for his job in these playoffs. Fortunately for him, the team he ...
It is also often used as a division between double doors. When dividing adjacent window units its primary purpose is a rigid support to the glazing of the window. Its secondary purpose is to provide structural support to an arch or lintel above the window opening. Horizontal elements separating the head of a door from a window above are called ...
Tottenham has launched an appeal against the severity of Uruguay midfielder Rodrigo Bentancur’s seven-match ban for making an offensive comment about South Koreans in relation to a remark about ...