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Who is Alpetragius?

Alpetragius a.k.a. Nur ad-Din al-Bitruji was an astronomer and a Qadi from Al-Andalus. Despite his limited knowledge of Ptolemy's Almagest, al-Biṭrūjī was the first astronomer after Ptolemy to present a non-Ptolemaic astronomical system as an alternative to Ptolemy's models. Another original aspect of his system was that he proposed a physical cause of celestial motions.


Alpetragius is a lunar impact crater located on the eastern edge of Mare Nubium, to the southwest of the much larger crater Alphonsus. In the southeast is the prominent crater Arzachel, and to the west lies the flooded Lassell.

  • also known as الپترگیوس

Printed dictionaries and other books with definitions for Alpetragius

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Google previewThe Kaguya Lunar Atlas (2011)

The Moon in High Resolution by Motomaro Shirao, Charles A. Wood

Alpetragius is a different type of crater. It is the ...

Google previewThe Moon in Close-up (2010)

A Next Generation Astronomer's Guide by John Wilkinson

Alpetragius is a 39 km diameter crater located on the southwest edge of the larger crater Alphonsus. Alpetragius has very complete walls rising to about 4 km above the interior. The inner walls slope gently to a massive central mountain peak ...

Google previewA dictionary of proper names and notable matters in the works of Dante (1898)

by Paget Jackson Toynbee

Alpetragio, Alpetragius or Alpetraus, an Arabian of Morocco, who flourished about the middle of Cent. xii.

Google previewBiographical Encyclopedia of Astronomers (2007)

by Virginia Trimble, Thomas R. Williams, Katherine Bracher, Richard Jarrell, Jordan D. Marché, F. Jamil Ragep

Alpetragius. > Biṭrūjī: Nūr al-Dīn Abū Isḥāq [Abū Ja far] Ibrāhīm ibn Yūsuf al-Biṭrūjī. Alvarez,. Luis. Walter...

Alpetragius Alvarez, Luis Walter.

Google previewThe Dante Encyclopedia (2011)

by Richard Lansing

Alpetragius Spanish-Arab astronomer of Morocco (full name: Abu Ishak Nur al-Din al-Bitrudji; died c.

Google previewRoutledge Encyclopedia of Philosophy: Index (1998)

by Edward Craig

Alpetragius, Avicenna (see Ibn Sina) and Alhasen provided the material and impetus for significant developments in astronomy, medicine, mathematics and optics.

Google previewThe Popular Encyclopedia (1837)

Being a General Dictionary of Arts, Sciences, Literature, Biography, History, and Political Economy. Reprinted from the American Edition of the "Conversations Lexicon", with Corrections and Additions ...

Alpetragius wrote a theory of the planets. Geography was brought into connexion with mathematics and astronomy, and treated scientifically, particularly by Abulfeda. The division of the earth into seven climates, various geographical ...

Google previewAn Illustrated Dictionary of Scientific Terms (1879)

by William Rossiter

Alpetragius, (al-pe- tra'ji-us). A plain in the moon, q.v, Alp:un. Alpha, (al'fa). [Gk. alpha, first letter of the alphabet.] Used to designate the brightest star in a constellation: thus, a Lyra, a Ursa Minoris, &c. * Alphard, (al'fard). [The Arabic name.] ...

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Scrabble value of A1L1P3E1T1R1A1G2I1U1S1

The value of this 11-letter word is 14 points, but it's not an accepted word in the Official Scrabble Players Dictionary.

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