In what sense do telescopes function as "time machines"?
A) They allow us to observe individual stars and galaxies as they change with time.
B) Some of the oldest telescopes are still in use today.
C) They allow us to see distant objects as they were in the distant past.
D) They allow us to see the Milky Way Galaxy as it was when it was much younger.
C) They allow us to see distant objects as they were in the distant past.
You might also like to view...
A split highway has a number of lanes for traffic. For traffic going in one direction, the radius for the inside of the curve is half the radius for the outside. One car, car A, travels on the inside while another car of equal mass, car B, travels at equal speed on the outside of the curve. Which statement about resultant forces on the cars is correct?
A. The force on A is half the force on B. B. The force on B is half the force on A. C. The force on A is four times the force on B. D. The force on B is four times the force on A. E. There is no net resultant force on either as long as they stay on the road while turning.
Which of the following is least reasonable regarding cosmic background radiation (CBR)?
A) CBR correponds to a solar temperature of about 6,000 degrees and implies that the B) The original CBR corresponded to a much higher temperature, but the expansion of C) Satellite-based telescopes were crucial to the discovery of CBR because much of the D) The motion of the Earth produces a Doppler shift, which causes CBR to appear a little E) Data for CBR is collected by pointing telescopes into dark regions of the sky (that do not appear to have any bright objects).
Einstein's theory of general relativity applies to accelerated frames of reference
Indicate whether the statement is true or false
________ is responsible for heating the Earth's interior today
Fill in the blank(s) with correct word