Question

The Milky Way galaxy (pictured above) is an example of a(n) ____ galaxy. At the center of the galaxy is a galactic bulge that is around 20,000 light years long. In the very center of the galaxy is a massive ____ that is 4 million times the mass of the sun and has a huge gravitational pull.

A. Spiral, Supernova
B. Spiral, Black Hole
C. Elliptical, Supernova
D. Elliptical, Black Hole​

Answer 1

A. Spiral, Black Hole

The Milky Way galaxy is an example of a spiral galaxy. This is characterized by a disk with spiral arms, a central bulge, and a dark matter halo. The center of the Milky Way galaxy is a galactic bulge that is around 20,000 light years long.

In the very center of the galaxy, there is a massive black hole that is 4 million times the mass of the sun and has a huge gravitational pull. This massive object, known as a supermassive black hole, is a key feature of many spiral galaxies and is thought to play an important role in the dynamics and evolution of these galaxies.