A few million years ago, Adhara was much closer to the Sun than it is at present, causing it to be a much brighter star in the night sky.

δ Canis Majoris is the third brightest star in the constellation after Sirius and Adhara, with an apparent magnitude of + 1. 83, and is a white or yellow-white in colour.

This star, along with ε CMa ( Adhara ), δ CMa ( Wezen ) and ο < sup > 2 </ sup > CMa ( Thanih al Adzari ), were Al ʽAdhārā ( ألعذاري ), the Virgins.

About 4, 700, 000 years ago, Adhara was 34 light years from the Sun, and was the brightest star in the sky with a magnitude of – 3. 99.

Adhara also appears as a physical character in the 2007 animated film, Nocturna, as the main character Tim's favourite star.

USS Adhara ( AK-71 ) was a United States Navy Crater class cargo ship named after the star.

This star, along with ε CMa ( Adhara ), η CMa ( Aludra ) and ο < sup > 2 </ sup > CMa ( Thanih al Adzari ), were Al ʽAdhārā ( ألعذاري ), the Virgins .< ref > ε CMa as Aoul al Adzari or Prima Virginum ( the first virgin ), ο < sup > 2 </ sup > CMa as Thanih al Adzari or Secunda Virginum ( the second virgin ) and δ CMa as Thalath al Adzari or Tertia Virginum ( the third virgin ).

η CMa should be Rabah al Adzari or Quarta Virginum ( Fourth of the Virgins ) consistently, but it was given by the name Aludra, meaning Virgin ( same meaning with Adhara ( ε CMa ) or Al ʽAdhārā )</ ref >

η CMa should be Rabah al Adzari or Quarta Virginum ( the fourth virgin ) consistently, but it was given by the name Aludra, meaning the virgin ( same meaning with Adhara ( ε CMa ) or Al ʽAdhārā )</ ref >

Adhara appears on the national flag of Brazil, symbolising the state of Tocantins.

The binary abacus is used to explain how computers manipulate numbers.

** For every non-empty set S there is a binary operation defined on S that makes it a group.

( A cancellative binary operation is enough.

A simple form of AM, often used for digital communications, is on-off keying: a type of amplitude-shift keying in which binary data is represented by the presence or absence of a carrier.

In mathematics, a binary relation R on a set X is antisymmetric if, for all a and b in X

If there is a mixture of only two types of atoms, not counting impurities, such as a copper-nickel alloy, then it is called a binary alloy.

In this respect, all of the various forms of an alloy containing only two constituents, like iron and carbon, is called a binary system, while all of the alloy combinations possible with a ternary alloy, such as alloys of iron, carbon and chromium, is called a ternary system.

The observations show that the cloud is asymmetrical and matches the pattern of X-ray binaries ( binary star systems containing black holes or neutron stars ), mostly on one side of the galactic center.

In mathematics, the associative property is a property of some binary operations.

Formally, a binary operation on a set S is called associative if it satisfies the associative law:

* Absorbing element, in mathematics, an element that does not change when it is combined in a binary operation with some other element

In mathematics, an associative algebra A is an associative ring that has a compatible structure of a vector space over a certain field K or, more generally, of a module over a commutative ring R. Thus A is endowed with binary operations of addition and multiplication satisfying a number of axioms, including associativity of multiplication and distributivity, as well as compatible multiplication by the elements of the field K or the ring R.

In computer science, an AVL tree is a self-balancing binary search tree, and it was the first such data structure to be invented.

In other words AVL tree is a binary search tree where the height of the left subtree differs from the height of the right subtree by at most 1 level, if it exceeds 1 level then rebalancing occurs.

Lookup in an AVL tree is performed exactly like in any unbalanced binary search tree.

As with all binary trees, a node's in-order successor is the left-most child of its right subtree, and a node's in-order predecessor is the right-most child of its left subtree.

For instance, binary search is said to run in a number of steps proportional to the logarithm of the length of the list being searched, or in O ( log ( n )), colloquially " in logarithmic time ".

The redesigned AIM for Mac is a full universal binary Cocoa API application that supports both Tiger and Leopard – Mac OS X 10. 4. 8 ( and above ) or Mac OS X 10. 5. 3 ( and above ).

However, Alpha Centauri is a bright binary star, whose unresolved components to the naked eye are both fainter than Arcturus.

Hipparcos also suggested that Arcturus is a binary star, with the companion about twenty times dimmer than the primary and orbiting close enough to be at the very limits of our current ability to make it out.

Such items recall the California journalist who reported an accident involving a movie star: `` The area in which Miss N -- was injured is spectacularly scenic ''.

Holmes went to Atlanta's Morehouse ( Negro ) College, where he is a B student and star halfback.

Because of its simplicity, star hopping is a very common method for finding objects that are close to naked-eye stars.

It is common for local societies to hold regular meetings, which may include activities such as star parties or presentations.

Aquarius is identified as " The Great One " in the Babylonian star catalogues and represents the god Ea himself, who is commonly depicted holding an overflowing vase.

The main feature of the family is the composite flower type in the form of capitula surrounded by involucral bracts. The name " Asteraceae " comes from Aster, the most prominent generum in the family, that derives from the Greek ἀστήρ meaning star, and is connected with its inflorescence star form.

The Latin name ' Asteraceae ' is derived from the type genus Aster, which is a Greek term, meaning " star ".

The history of astrometry is linked to the history of star catalogues, which gave astronomers reference points for objects in the sky so they could track their movements.

* A smaller figure, next to the man, sitting on a chair ; as it is near the pole star, it may be seen by observers in the Northern Hemisphere through the whole year, although sometimes upside down ( the constellation Cassiopeia )

* α Antliae is the constellation's brightest star at magnitude 4. 25.

* δ Antliae is a blue double star 481 light years away.

* ζ Antliae is a wide double star 373 light years away.

The primary ( ζ < sup > 1 </ sup > Ant ) is of magnitude 5. 8, though it is a double star with a primary of magnitude 6. 2 and a secondary of magnitude 7. 0.

* δ Apodis is a double star with a separation of 103 arcseconds.

δ < sup > 1 </ sup > is a red giant star located 765 light years away, with a magnitude of 4. 7. δ < sup > 2 </ sup > is an orange giant star located 663 light years away, with a magnitude of 5. 3.