Concerning Dark Energy, We Do Know

question 79

Multiple Choice

Concerning dark energy, we do know:

• A)that it is created when matter annihilates anti-matter.
• B)its density remains constant over time, so it is not important in the early Universe.
• C)combined with dark matter, it will ultimately produce a closed universe.
• D)that it was revealed with Type II supernovae distances in the late 1990s.
• E)that it makes up 90% of all the matter and energy in the whole universe.

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Definitions:

SmartArt

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Window Group

A set of windows or panels within an application that are designed to work together or provide related functionality.

Auto Outline

A feature in Microsoft Excel that automatically creates an outline of your data based on formulas linking different cells or groups of cells.

Freeze Panes

A feature in spreadsheet programs that keeps selected rows or columns visible on the screen as you scroll through the document.