From Studies of the Rotations of Galaxies and Dynamics of Clusters

question 12

Short Answer

From studies of the rotations of galaxies and dynamics of clusters, we now think that about
of the mass of the universe is composed of dark matter.

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Definitions:

Sealed-Bid

A bidding process where all bids are submitted secretly, and the highest bid usually wins, often used in auctions or tendering processes.

Lemons

Sour-tasting citrus fruit that is often used in cooking or as a garnish, known for their high vitamin C content.

Expected Value

The anticipated value for a given investment, calculating all possible outcomes under a set of probabilities.

Dipstick

A tool used for measuring the quantity of a liquid in a reservoir, commonly used for checking oil levels in engines.