Encyclopedia : R : RR : RRL (5 articles)

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Rrl
RRL is an abbreviation for the Rocket Racing LeagueRrl is also a cacodemon - see the list of Enochian angels..
RR layout
In Automobile design, an RR, or Rear-engine, Rear wheel drive, layout places both the engine and drive wheels at the rear of the vehicle. In contrast to the MR layout, however, the center of gravity of the engine itself is actually past the rear axle. This is not to be confused with the center of ..
RR Lyrae
RR Lyrae is a variable star in the Lyra constellation. It is the prototype of the RR Lyrae variables star class. It has a period of about 13 hours, and oscillates between apparent magnitudes 7 and 8. As RR Lyrae variables are important standard candles, knowing the precise distance of this star is ..
RR Lyrae variable
RR Lyrae variables are variable stars often used as standard candles. RR Lyrae are pulsating Horizontal branch stars, with a mass of around half the Sun's. RR Lyrae stars shed mass prior to becoming RR Lyrae and consequently, RR Lyrae were once stars with similar or slightly greater mass than th..

 

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