Cosmology and Astronomy are closely related and a few of the example questions look more like Cosmoloy to me:
What does the future of the universe look like?
Does the cosmic microwave background radiation (CMBR) prove the Big Bang?
Would Cosmology (studying the universe as a whole) questions be on or off-topic on the new Astronomy (concerned with individual celestial objects) site?
My preference would be on-topic, just wondering what other think?