1 What Does The Term Hubble Time Mean In Cosmology A The Age Of The Most Distant Galaxy Observed Using Hubble B The 1 (53.46 KiB) Viewed 19 times
1 What Does The Term Hubble Time Mean In Cosmology A The Age Of The Most Distant Galaxy Observed Using Hubble B The 2 (39.21 KiB) Viewed 19 times
1. What does the term Hubble time mean in cosmology? A. The age of the most distant galaxy observed using Hubble. B. The age of the universe. C. The age of the oldest rock found on Earth. D. The age of the Sun. E. What is the current best calculation for the Hubble time (in yr)? XC 2. Thinking about the ideas of space and time in Einstein's general theory of relativity, how do we explain the fact that all galaxies outside our Local Group show a redshift? A. The gravitational influence of the Local Group weakens as the distance increases causing the galaxies to move away from us at. B. The immense gravitational influence of the Local Group caused outside galaxies to "slingshot" around and away from the Local Group at high velocities. C. The stretching of spacetime as the universe expands causes the light waves to stretch as they travel making the wavelengths longer. D. The Local Group is close enough to the center of the universe that we can see most objects moving away from us. umbrerse occur if it were composed entirely of matter (that
2. Would acceleration of the universe occur if it were composed entirely of matter (that is, if there were no dark energy)? A. Yes, some types of matter can push things apart to cause acceleration. B. Yes, dark matter would still exist, which is the primary source of acceleration. C. No, the matter would be unable to push things apart and cause acceleration. D. No, without dark energy there is no dark matter, which is the primary source of acceleration. t E. t
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