GENERAL KNOWLEDGE

GK

THE UNIVERSE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which statements explain current theories about dark energy and dark matter? Check all that apply.
A
Space that appears empty actually contains dark energy and dark matter.
B
Dark matter does not emit electromagnetic radiation.
C
Scientists believe dark energy will cause the universe to collapse inward to a single point.
D
Scientists theorize that dark energy is causing the expansion of the universe to accelerate.
E
Dark matter includes all of the dust, ice, and debris that scientists observe in black holes.
Explanation: 

Detailed explanation-1: -Scientists believe dark energy will cause the universe to collapse inward to a single point. (correct) Scientists theorize that dark energy is causing the expansion of the universe to accelerate. Dark matter includes all of the dust, ice, and debris that scientists observe in black holes.

Detailed explanation-2: -dark. But if we cannot see dark matter, how do scientists know it is there? The answer is gravity. Astronomers indirectly detect dark matter through its gravitational influences on stars and galaxies.

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