A mathematical abbreviation, using powers of 10 for writing very large or very small number.

The distance that light travels through space in one year.

Everything that exists, including all matter and energy.

A huge collection of gas, dust, and billions of stars.

A group of stars that, when seen from Earth, form a pattern.

Measures the amount of light reaching Earth.

The total amount of light given off by a star in all directions.

A process where the color of light is looked at closely to figure out what type of atoms it is made of.

A huge cloud of gas and dust where a star is born or begins life.

An explanation of how the universe began 10-20 billion years ago.

A gigantic explosion where a massive star collapses and throws its outer layers into space.

A dead, small, hot star that is the leftover center of the star. It has no energy left.

What stage that lasts the longest amount of time and where the star remains unchanging and stable.(Hint: Our sun is in this stage)

The longest part of a star's life. The star is stable.

What atoms bond or fuse to create a star?

This stage in a low mass star's life is where the star expands to cool.

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