Planets
Where Protostars come from
Nebulas
A supergiant dies in an explosion called a
Supernova
A Meteoroid that has made it into the atmosphere but not to the ground is called a
Meteor
The tendency of a moving object to stay in motion
Inertia
A group of star clusters held together by gravity
Galaxy
What galaxy is home to Earth?
Milky Way galaxy
A planet needs both of these to stay in orbit around the Sun
Gravity and Inertia