Author Question: How did the Hipparcos mission revolutionize our knowledge of stellar properties? What will be an ... (Read 60 times)

tiara099 · **on:** Jul 27, 2018

How did the Hipparcos mission revolutionize our knowledge of stellar properties?

What will be an ideal response?

Question 2

The spherical distribution of the globular clusters in the Halo reminds us of the similar distribution of cometary nuclei in the ________ cloud.

A) Hubble B) Kepler C) Kuiper D) Oort E) Shapley

smrtceo · **Reply #1 on:** Jul 27, 2018

Answer to Question 1

In space, it had far better resolution than Earth-based telescopes, so could find parallaxes and accurate distances out to 200 parsecs, for almost a million stars. These, in turn, give the luminosities of these stars, critical to helping us understand all other stellar properties as well.

Answer to Question 2

D