Author Question: Which of the following greatly improves the angular resolution of radio maps? A) Schmidt ... (Read 97 times)

jc611 · **on:** Jul 27, 2018

Which of the following greatly improves the angular resolution of radio maps?

A) Schmidt corrector plates
B) more sensitive spectrometers
C) switching from film to CCD imaging
D) use of interferometers
E) chilling the infrared detectors

Question 2

What are the two main differences between extrasolar planetary systems discovered to date and our Solar System?

A) extrasolar planets tend to be more massive and dense than Jupiter
B) extrasolar planet orbits tend to be more eccentric and inclined than in our Solar System
C) extrasolar planet orbits tend to be closer and more eccentric than in our Solar System
D) extrasolar planet orbits tend to be closer and more circular than in our Solar System
E) extrasolar planets tend to be bigger and denser than Jupiter