From the fact that virtually every galaxy is moving away from us and more distant galaxies are moving away from us at a faster rate than closer ones, we conclude that
A) the Milky Way Galaxy is expanding.
B) we are located at the center of the universe.
C) even nearby galaxies will eventually be moving faster than the speed of light.
D) the universe is expanding.
E) the universe is shrinking.
D) the universe is expanding.
You might also like to view...
What is the focal length of a pair of contact lenses that will allow a person with a near point of 125.0 cm to read a newspaper held 25.0 cm from his eyes?
A) -100 cm B) -31.3 cm C) 10.2 cm D) 20.8 cm E) 31.3 cm
Electric potential, measured in volts, is the ratio of electric energy to the amount of electric
A) current. B) resistance. C) charge. D) voltage. E) none of the above
What is one "kilowatt-hour" [kW ? h]?
A) It is the energy output of one kilowatt operating for one hour. B) It is work done continuously for one hour. C) It is the force output of one kilowatt operating for one hour. D) It is the power output of a one kilowatt device. E) Actually, nobody knows what this term means.
Naturally radioactive nuclei can decay spontaneously by emitting the following particles:
a. helium nuclei, electrons, photons b. electrons, neutrons, protons c. helium nuclei, electrons, protons d. electrons, neutrons, photons e. quarks and leptons