The future of our universe-continuous expansion or eventual contraction-can be determined by observing the rate at which cosmological expansion is changing because of gravitational attraction between masses in the universe. How would this effect of deceleration be measured in terms of the Hubble relationship between speed of recession (graphed vertically) and distance (graphed horizontally)?
A)The straight line will become slightly curved and steeper at the largest distances.
B)The straight line will be found to be slightly curved and steeper at the shortest distances, but otherwise it will be straight.
C)The straight line will become slightly curved and less steep at the largest distances.
D)The straight-line slope will become zero at some distance and change to the opposite slope beyond this distance.

Question

Quizplus · Accepted Answer

The Answer of The future of our universe-continuous expansion or eventual contraction-can be determined by observing the rate at which cosmological expansion is changing because of gravitational attraction between masses in the universe. How would this effect of deceleration be measured in terms of the Hubble relationship between speed of recession (graphed vertically) and distance (graphed horizontally)?
A)The straight line will become slightly curved and steeper at the largest distances.
B)The straight line will be found to be slightly curved and steeper at the shortest distances, but otherwise it will be straight.
C)The straight line will become slightly curved and less steep at the largest distances.
D)The straight-line slope will become zero at some distance and change to the opposite slope beyond this distance.

The Future of Our Universe-Continuous Expansion or Eventual Contraction-Can Be