Double star, an Uncommon card

The card carries these facts from its Wikipedia article.

• This occurs because the pair either forms a binary star or is an optical double, a chance line-of-sight alignment of two stars at different distances from the observer.
• Binary stars are important to stellar astronomers as knowledge of their motions allows direct calculation of stellar mass and other stellar parameters.
• The only case of "binary star" whose two components are separately visible to the naked eye is the case of Mizar and Alcor, but it is not known for certain whether Mizar and Alcor are gravitationally bound.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Double star article was read about 21,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 62 and blocks with 47: each hit it takes is cut by 19 %.

Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.

The cards just above and just below Double star in the power ranking, all domains together.