Mighty Dog shelfmate

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Possible Answers: ALPO.

Last seen on: LA Times Crossword 21 Nov 2017, Tuesday

Random information on the term “ALPO”:

Since its founding in 1911, the American Association of Variable Star Observers (AAVSO) has coordinated, collected, evaluated, analyzed, published, and archived variable star observations made largely by amateur astronomers and makes the records available to professional astronomers, researchers, and educators. These records establish light curves depicting the variation in brightness of a star over time.


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Since professional astronomers do not have the time or the resources to monitor every variable star, astronomy is one of the few sciences where amateurs can make genuine contributions to scientific research. The AAVSO International Database currently has over 20 million variable star estimates dating back over 100 years. The 20-millionth observation was received into the database on February 19, 2011, during the AAVSO’s 100th year of existence. It receives nearly 1,000,000 observations annually from around 2,000 professional and amateur observers and is quoted regularly in scientific journals.

ALPO on Wikipedia