Sun vocab

A _________ is an exploding ball of burning gas held together by gravity.

A collection of billions of stars and other matter held together by gravity is called a ___________.

An ______________ is the act or instance of perceiving the environment using one of the senses.

The measure of space between to things is called ___________.

A ________________ is a unit of distance equal to the distance light can travel in one year or 6 trillion miles.

A prediction or educated guess that can be tested and used to guide further study is called a _____________.