SOLAR SYSTEM

Detailed explanation-1: -Multiplying that by the Milky Way’s estimated 100 billion stars results in a large number indeed: 1, 000, 000, 000, 000, 000, 000, 000, 000 stars, or a “1” with 24 zeros after it (1 septillion in the American numbering system; 1 quadrillion in the European system).

Detailed explanation-2: -By measuring that starlight – specifically, its color and brightness – astronomers can estimate how many stars our galaxy holds. With that method, they discovered the Milky Way has about 100 billion stars – 100, 000, 000, 000.

Detailed explanation-3: -Astronomers estimate there are about 100 thousand million stars in the Milky Way alone. Outside that, there are millions upon millions of other galaxies also!

Detailed explanation-4: -Milky Way Galaxy | AMNH. The Milky Way is the galaxy in which our Solar System lives. There are more than 200 billion stars in our spiral galaxy, and our Sun is just one of them. Even if you traveled at the speed of light, it would take you about 100, 000 years to get across the Milky Way.

Detailed explanation-5: -There are  400 billion stars in the Milky Way, and  2 trillion galaxies in the visible Universe.

Detailed explanation-6: -It is estimated that the universe contains between 30 and 70 billion trillion stars.