Tomorrow's world

2. vehicles that travel in space and can carry astronauts or robots.
6. a huge ball of hot gas in space that makes its own light and heat. Our closest star is the Sun.
8. everything that exists, including all stars, planets, galaxies, and space.
11. the force that pulls things toward each other, like what keeps us on the ground.
12. vehicle that can drive like a car on roads and fly like an airplane in the sky.

1. a tool that helps us see very far away objects in space.
3. power that comes from sunlight and can be used to make electricity or heat.
4. when a rocket lifts off from Earth to go into space.
5. related to the Sun, like sunlight or energy that comes from the Sun.
7. a huge group of stars, planets, gas, and dust held together by gravity.
9. the United States space agency. It sends astronauts, rockets, and robots into space to learn about planets and the universe.
10. a drawing that shows where places are, like countries, oceans, or even planets.