unit 5 week 4 vocab

Astronomy is the study of the Universe and everything in it, including planets, stars, galaxies, comets, and black holes. It's full of huge distances, gigantic sizes, and long periods of time. It's a BIG subject!

to find by adding, subtracting, multiplying, or dividing 

when something is judged or assessed

1 : a straight line that runs from one side of a figure and passes through the center Measure the diameter of the circle.

2 : the distance through the center of an object from one side to the other

to judge the value or condition of.

Example: Our teacher is evaluating our math skills

the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution.

"the Earth orbits around the sun"

A sphere is an object that is completely round in shape like a ball.