We can't detect stellar parallax with naked-eye observations. Which of the following would make parallax easier to observe?
A) getting away from streetlights
B) Speeding up the precession of Earth's axis
C) speeding up Earth's orbital motion
D) slowing down Earth's orbital motion
E) increasing the size of Earth's orbit
Question 2
Which of the following processes is involved in the sunspot cycle?
A) a large change in the amount of visible light emitted by the Sun
B) an imbalance in the operation of the solar thermostat
C) a slight gravitational contraction of the Sun
D) small variations in the rate of nuclear energy generation in the solar interior
E) the winding of magnetic field lines due to the Sun's rotation
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