The entire Universe is filled with billions and billions of galaxies and galaxy clusters;
the Milky Way galaxy, a vast assembly of hundreds of billions of stars;
The Sun is a very typical star, like many of the thousands of stars we see at night.
So, do you believe our earth is the only planet have life in the whole universe?
the Milky Way galaxy, a vast assembly of hundreds of billions of stars;
The Sun is a very typical star, like many of the thousands of stars we see at night.
So, do you believe our earth is the only planet have life in the whole universe?