Today we rely largely on what technique to precisely measure distances in the solar system?
A) Transits of Venus across the Sun
B) Radar echo timings
C) Measurement of stellar parallaxes.
D) Timings of the eclipses of its moons by Jupiter's shadow
E) Precise measurements of length of the year with atomic clocks

Question

Quizplus · Accepted Answer

Radar echo timings are currently the most precise technique for measuring distances in the solar system. This method involves bouncing radar signals off a planet or other object and measuring the time it takes for the signal to travel back to Earth. This can provide highly accurate distance measurements. The other methods listed are still useful, but not as precise as radar echo timings.

Today We Rely Largely on What Technique to Precisely Measure