Astronomy Astronomy Galaxies and the Milky Way

Question 1

What type of galaxy is the Milky Way?

Accepted Answer

Barred spiral galaxy

Answer

Elliptical galaxy

Answer

Irregular galaxy

Answer

Lenticular galaxy

Question 2

What is the name of the supermassive black hole at the center of the Milky Way?

Accepted Answer

Sagittarius A*

Answer

Cygnus X-1

Answer

M87*

Answer

NGC 4993

Question 3

How long does it take the Sun to complete one orbit around the Milky Way's center?

Accepted Answer

About 225 million years

Answer

About 26,000 years

Answer

About 1 billion years

Answer

About 13 million years

Question 4

What are the two largest satellite galaxies of the Milky Way?

Accepted Answer

Large and Small Magellanic Clouds

Answer

Andromeda and Triangulum

Answer

Canis Major and Sagittarius Dwarf

Answer

Fornax and Sculptor Dwarfs

Question 5

What is the Andromeda Galaxy's designation in the Messier catalog?

Accepted Answer

M31

Answer

M33

Answer

M81

Answer

M101

Question 6

What is the approximate diameter of the Milky Way?

Accepted Answer

About 100,000 light-years

Answer

About 10,000 light-years

Answer

About 1 million light-years

Answer

About 500,000 light-years