The universe refers to everything
That exists, from the earth to the
Most distant parts of space. The
Universe comprises countless of
Galaxies of stars. The farthest
Ones we can see are so distant
That their light takes billions of
Years to reach us.
•The milky way is the galaxy
That contains our solar system.
Our galaxy probably originated
Soon after the universe was formed,
About 15,000 millions years ago.
The milky way circles the whole
Sky. We can see parts of it in the
Night wherever we are on the earth.
The sun is a globe of gas,
Mostly hydrogen, measuring
1,392 thousand kilometers
Across, over a hundred times
The diameter of earth.
