MODIFIED MAST ASTRONOMY:COSMIC PERSPECTI
MODIFIED MAST ASTRONOMY:COSMIC PERSPECTI
9th Edition
ISBN: 9780136904496
Author: Bennett
Publisher: PEARSON
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Chapter 23, Problem 30EAP
To determine

To choose:

Why dark energy has been hypothesized to exist,

(a) observations suggesting that the expansion ofthe universe is accelerating.

(b) the high orbital speeds ofstars far from the center of our galaxy.

(c) explosions thatseem to create giant voids betweengalaxies.

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MODIFIED MAST ASTRONOMY:COSMIC PERSPECTI

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