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WikiCards · Card list · Science cards · Galaxy rotation curve
Uncommon card · Science
Galaxy rotation curve, an Uncommon card
The rotation curve of a disc galaxy is a plot of the orbital speeds of visible stars or gas in that galaxy versus their radial distance from that galaxy's centre.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 75
- DEF
- 61
- Power
- 136
- Wikipedia reads a year
- 42,000
Power 136 (ATK + DEF): stronger than 70 % of WikiCards cards.
Galaxy rotation curve quiz: 3 questions
Three questions on the Galaxy rotation curve card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
Theories involving ______ dark matter are the main postulated explanation of this discrepancy.
Answer
unobservable. Theories involving unobservable dark matter are the main postulated explanation of this discrepancy. From the Galaxy rotation curve article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Simon Pagenaud. Simon Pagenaud 83 · Galaxy rotation curve 75 · Danny Hillis 72 · Invention 69 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.
- It is typically rendered graphically as a plot, and the data observed from each side of a spiral galaxy are generally asymmetric, so that data from each side are averaged to create the curve.
- The experimental curves observed are at significant variance with gravitational theory applied to the matter observed in a galaxy.
- Theories involving unobservable dark matter are the main postulated explanation of this discrepancy.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Galaxy rotation curve article was read about 42,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 75 and blocks with 61: each hit it takes is cut by 24 %.
How to get Galaxy rotation curve
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 Galaxy rotation curve in the power ranking, all domains together.
- Robert CrippenUncommon · History · ATK 69 DEF 67
- Sébastien TellierUncommon · Arts · ATK 71 DEF 65
- Dave SimUncommon · Arts · ATK 73 DEF 63
- JugglingUncommon · Science · ATK 71 DEF 65
- Simon PagenaudUncommon · Society · ATK 83 DEF 53
- Manuela SchwesigUncommon · History · ATK 72 DEF 64
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, Galaxy rotation curve (revision), CC BY-SA 4.0. Photo : ScienceDawns, CC BY-SA 4.0, Wikimedia Commons.
