SPACE
Are there any other planets outside of our solar system
Are there any other galaxys outside of our solar system
Is there any life on other planets
how long is a light year
Can a human travel to Mars and back
SPACE
Are there any other planets outside of our solar system
Are there any other galaxys outside of our solar system
Is there any life on other planets
how long is a light year
Can a human travel to Mars and back