solar system - n. our sun and the planets that move around it

galaxy - n. any of the very large groups of stars that makes up the universe

Milky Way - n. the galaxy in which we live that contains the stars that make up the Milky Way

data - n. facts or information used usually to calculate, analyze, or plan something

surge - n. a sudden large increase

intersect - v. to meet and cross at one or more points

instability - n. the state of being likely to change

density - n. the quality of having parts that are close together