EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is the best description of our galaxy, the Milky Way?
A
globular cluster
B
spiral galaxy
C
elliptical galaxy
D
irregular galaxy
Explanation: 

Detailed explanation-1: -The Milky Way is a huge collection of stars, dust and gas. It’s called a spiral galaxy because if you could view it from the top or bottom, it would look like a spinning pinwheel. The Sun is located on one of the spiral arms, about 25, 000 light-years away from the center of the galaxy.

Detailed explanation-2: -The Milky Way is a large barred spiral galaxy.

Detailed explanation-3: -Spiral galaxies appear as flat, blue-white disks of stars, gas and dust with yellowish bulges in their centers. These galaxies are divided into two groups: normal spirals and barred spirals. In barred spirals, the bar of stars runs through the central bulge.

Detailed explanation-4: -Why is the Milky Way a spiral? This is due to its rotation, or rather, the rotation of matter inside the galactic disk around the center.

Detailed explanation-5: -Our galaxy, the Milky Way, is disk-shaped with spiral arms. It has an elliptical bulge in the centre and a spherical halo that is denser closer to the Galaxy centre. It is about 100, 000 light years across and our solar system is about two thirds of the way out from the centre.

There is 1 question to complete.