Wow! This article made me think of something--some of you may know that Earth's atmosphere(particularly the mesosphere) protects us from meteors and other harmful space rocks. If that’s true, then why did an asteroid hit Earth and kill all the dinosaurs? There must have been an atmosphere at that time or there wouldn’t be dinosaurs. If any of you know the answer please tell me.

That is super amazing! I totally want one of these.

My adequate appreciation for your service!