How did measurements of neutrinos from the Sun pose a problem for modern astronomy and how was it resolved?
What will be an ideal response?
Question 2
Far infrared astronomy must be done from high-flying aircraft because
a. far infrared radiation is absorbed low in Earth's atmosphere.
b. far infrared photons are quite energetic.
c. far infrared telescopes are not very heavy.
d. far infrared sources are very bright.
e. None of the other choices are correct.