Author Question: As viewed from above or face-on, a ____________ spiral galaxy has many branches and spurs, making ... (Read 66 times)

khang · **on:** Jul 27, 2018

As viewed from above or face-on, a ____________ spiral galaxy has many branches and spurs, making the arms less discernible.

Fill in the blank(s) with correct word

Question 2

What causes the outward pressure that balances the inward pull of gravity in a star?

a. the outward flow of energy
b. the opacity of the gas
c. the temperature of the gas
d. the density of the gas
e. the temperature and the density of the gas