When our sun’s life began

The things that the giant interstellar cloud was made of

The star around which the earth orbits

A massive, bright, sphere of hot gas which is held together by its own gravity

A large area in space that contains gas and dust particles

The amount of time it would take to reach the sun when it was a cloud of dust and gas

This will cause all the water in our atmosphere to dry up

A reaction where two atomic nuclei fuse together to create a larger nucleus and in the process release energy

The closest star to the Earth

Another name for very young stars

The amount of years it took for the sun to perform nuclear fusion.

Any star that is fusing hydrogen in its core, and has a stable balance of outward pressure from core nuclear fusion and gravitational forces pushing inward.

Occurring or situated between stars

10,000°F

The stage in a star’s life at which nuclear reactions slow and the star slightly cools, turns red, and grows

The amount of years it will take for the sun to cause an extreme greenhouse effect on the earth

Something that the sun will do that isn’t good for the earth

Joining or blending to form a single entity

The amount of earths that can fit inside the sun

The two characteristics that determine the life cycle of a star

How much more energy the sun will have in 1 billion years

Effects on a star after nuclear fusion

The series of changes in the life of an organism

The age of the sun (young, middle, old)

Something that is brighter than anything in the galaxy