A person who is trained to travel in a spacecraft, a spaceman
Astronaut
It is the force by which a planet or other body draws objects toward its center. Its force keeps all of the planets in orbit around the sun.
Gravity
A .... ...... happens when the moon gets in the way of the sun’s light and casts its shadow on Earth. That means during the day, the moon moves over the sun and it gets dark
Solar eclipse
The biggest planet in our solar system
Jupiter
The leading explanation about how the universe began
The Big Bang theory
This planet is named after the Roman god of the sea
Neptune
......is a type of electromagnetic radiation that makes black-light posters glow, and is responsible for summer tans — and sunburns
UV - Ultraviolet light
What is the sun made of?
hydrogen and helium
