a settlement of people who move to a new place but still have ties to their home country

relating to the moon

a device designed to explore something and collect information

energy in the form of heat or light that is sent out in waves that people can't see

rays of light that people can't see that can make skin darker after exposure to the sun

mixture of gases surrounding the earth or another planet

a large round pit caused by the impact of a meteoroid

the central part of the the earth; central part of a planet

competing for; striving for

A federation of emirates, or lands, governed by Arab leaders; a federation of independent city-states

bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)

a particular period in history

measures and records ground motion and can be used to determine the distance seismic waves travel

to remove or take out

a small living plant or animal seen only with a microscope; a microbe

economical; good value in relation to the price, or cost

a gas found on earth in the intestines of some animals; also detected in Venus's atmosphere through telescopes

point of view; one way of looking at things

What does the first "A" in NASA stand for?