L6 Flashcards
What does asteroid mean?
A small rocky body orbiting the sun.
What is an astronomer mean?
An expert in or student of astronomy.
What is a black hole?
A region of space having a gravitational field so intense that no matter or radiation can escape.
What does experimental mean?
Based on untested ideas or techniques and not yet established or finalized.
What is a galaxy?
A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
What does mechanics mean?
The branch of applied mathematics dealing with motion and forces producing motion.
What is a meteor?
A small body of matter from outer space that enters Earth’s atmosphere.
What is a meteorite?
A meteor that survives its passage through the Earth’s atmosphere such that part of it strikes the ground.
