WikiCards · Card list · Science cards · Astronomical unit
Rare card · Science
Astronomical unit, a Rare card
The astronomical unit is a unit of length defined as 149597870700 m.
- Rarity
- Rare
- Domain
- Science
- ATK
- 77
- DEF
- 67
- Power
- 144
- Wikipedia reads a year
- 260,000
Power 144 (ATK + DEF): stronger than 75 % of WikiCards cards.
Astronomical unit quiz: 3 questions
Three questions on the Astronomical unit card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
It is also a ______ component in the definition of another unit of astronomical length, the parsec.
Answer
fundamental. It is also a fundamental component in the definition of another unit of astronomical length, the parsec. From the Astronomical unit article on Wikipedia.
In which decade?
Historically, the astronomical unit was conceived as the average Earth-Sun distance, before its modern redefinition in ____.
Answer
2010s. Historically, the astronomical unit was conceived as the average Earth-Sun distance, before its modern redefinition in 2012. From the Astronomical unit article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Soling European Championship results. Soling European Championship results 86 · 2026 Atlantic hurricane season 82 · Astronomical unit 77 · Peruonto 73 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- Historically, the astronomical unit was conceived as the average Earth-Sun distance, before its modern redefinition in 2012.
- The astronomical unit is used primarily for measuring distances within the Solar System or around other stars.
- It is also a fundamental component in the definition of another unit of astronomical length, the parsec.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Astronomical unit article was read about 260,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 77 and blocks with 67: each hit it takes is cut by 27 %.
How to get Astronomical unit
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.
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Credits
Text : Wikipedia, Astronomical unit (revision), CC BY-SA 4.0. Photo : Bertrand rodruiguez, CC0, Wikimedia Commons.

