atmosphere|noun|the gases surrounding any star or planet
dust|noun|pieces of matter so small that they can float in the air
investigate|verb|to study or examine all information about an event, situation or charge; to search for the truth
planet|noun|a large object in space that orbits the sun (&ldquo;Earth is a planet.&rdquo;)
power|noun|the ability to control or direct others; control; strength; ruling force; force or energy used to do work (&ldquo;Water power turns the wheel.&rdquo;)
