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WikiCards · Card list · Science cards · Circumstellar disc
Uncommon card · Science
Circumstellar disc, an Uncommon card
A circumstellar disc is a torus-, pancake- or ring-shaped accretion disk of matter composed of gas, dust, planetesimals, asteroids, or collision fragments in orbit around a star.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 69
- DEF
- 68
- Power
- 137
- Wikipedia reads a year
- 17,000
Power 137 (ATK + DEF): stronger than 70 % of WikiCards cards.
Circumstellar disc quiz: 3 questions
Three questions on the Circumstellar disc card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Such a disc can ______ itself in various ways.
Answer
manifest. Such a disc can manifest itself in various ways. From the Circumstellar disc article on Wikipedia.
Which of these Wikipedia articles is read the most in a year?
Answer
Sian Proctor. Sian Proctor 22,000 · Circumstellar disc 17,000 · Hugo Steinhaus 13,000 · Antoine Laurent de Jussieu 8,200 Wikipedia reads over a year.
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.
- Around the youngest stars, they are the reservoirs of material out of which planets may form.
- Around mature stars, they indicate that planetesimal formation has taken place, and around white dwarfs, they indicate that planetary material survived the whole of stellar evolution.
- Such a disc can manifest itself in various ways.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Circumstellar disc article was read about 17,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 69 and blocks with 68: each hit it takes is cut by 27 %.
How to get Circumstellar disc
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.
More Science cards
Cards close in power
The cards just above and just below Circumstellar disc in the power ranking, all domains together.
- M1841 6-pounder field gunUncommon · History · ATK 68 DEF 69
- Sakon YamamotoUncommon · History · ATK 76 DEF 61
- Asad ShafiqUncommon · History · ATK 74 DEF 63
- Graciela IturbideUncommon · Arts · ATK 70 DEF 67
- Hurley, WisconsinUncommon · Society · ATK 75 DEF 62
- JointUncommon · Nature · ATK 66 DEF 71
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Circumstellar disc (revision), CC BY-SA 4.0. Photo : NASA, ESA, and R. Soummer (STScI), CC BY 4.0, Wikimedia Commons.
