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The Journey of Flight.pdf - Valkyrie Cadet

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oblivion, it became a quasar, emitting a burst <strong>of</strong> radiation, including massive flashes <strong>of</strong> X-ray and<br />

ultraviolet radiation.<br />

Although the universe is still expanding, the combined gravity <strong>of</strong> its dark matter may be sufficient<br />

to halt the expansion. If this happens, then gravity may pull all the galaxies together again in a massive<br />

Big Crunch. <strong>The</strong> more we explore, the more we discover we have yet to learn.<br />

� moon<br />

� crater<br />

� rille<br />

� moon dust<br />

� moon rocks<br />

� basalt<br />

� anorthosite<br />

� KREEP<br />

� Mars<br />

� Mariner and Viking probes<br />

� asteroids<br />

� Jupiter<br />

� Saturn<br />

� Uranus<br />

MATCHING<br />

1. older than rocks on the Earth<br />

2. found mainly on the moon’s plains<br />

3. composed mostly <strong>of</strong> feldspar<br />

4. abundant on the moon; rare on Earth<br />

5. can’t find on Earth<br />

6. three new minerals discovered<br />

7. makes up the highlands <strong>of</strong> the Moon<br />

548<br />

� Neptune<br />

� Pluto<br />

� Pioneer and Voyager probes<br />

� comets<br />

� galaxy<br />

� Milky Way<br />

� interstellar space vs. intragalactic space<br />

� nova and supernova<br />

� pulsar<br />

� black hole<br />

� nebulae<br />

a. lunar rocks<br />

b. anorthosite<br />

c. basalt<br />

d. pyroxferroite<br />

e. natural glass<br />

f. armalcolite<br />

g. KREEP<br />

h. tranquillityite

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