Photometry, a Common card

The card carries these facts from its Wikipedia article.

• This light is measured through a telescope using a photometer, often made using electronic devices such as a CCD photometer or a photoelectric photometer that converts light into an electric current by the photoelectric effect.
• When calibrated against standard stars of known intensity and colour, photometers can measure the brightness or apparent magnitude of celestial objects.
• The methods used to perform photometry depend on the wavelength region under study.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Photometry article was read about 11,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 70 and blocks with 69: each hit it takes is cut by 28 %.

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 Photometry in the power ranking, all domains together.