Words I don't know

1.observations-to remark about something
2.atmosphere-the atmosphere the mixture of gases around the Earth:
3.meteors-a piece of rock or other matter from space that produces a bright light as it travels through the Earth's atmosphere
4.orbital-the curved path through which objects in space move around a planet or star
5.insertion-something that is made to go inside or into something else
6.asteroid-one of many rocky objects, varying in width from over 900 kilometres to less than one kilometre, which circle the sun
7.comet-an object ththe force which attracts objects towards one another, especially the force that makes things fall to the ground:
8.rummer-strange
9.gravity-the force which attracts objects towards one another, especially the force that makes things fall to the ground
10.heave-INFORMAL to throw something forcefully, especially something large and heavy