Mount Wilson Observatory, an Uncommon card

The card carries these facts from its Wikipedia article.

• The MWO is located on Mount Wilson, a 5,710-foot peak in the San Gabriel Mountains near Pasadena, northeast of Los Angeles.
• The observatory contains two historically important telescopes: the 100-inch Hooker telescope, which was the largest aperture telescope in the world from its completion in 1917 to 1949, and the 60-inch telescope which was the largest operational telescope in the world when it was completed in 1908.
• It also contains the Snow solar telescope completed in 1905, the 60-foot solar tower completed in 1908, the 150-foot solar tower completed in 1912, and the CHARA array, built by Georgia State University, which became fully operational in 2004 and was the largest optical interferometer in the world at its completion.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Mount Wilson Observatory article was read about 35,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 72 and blocks with 65: each hit it takes is cut by 26 %.

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 Mount Wilson Observatory in the power ranking, all domains together.