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what's up for July this month I'll be

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taking you on a guided tour of the moon

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hello and welcome I'm Jane Houston Jones

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with NASA's Jet Propulsion Laboratory in

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Pasadena California the moon has some

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great features that you can see with the

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unaided eye first look for bright rays

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or long white lines these are streaming

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from impact craters on the moon surface

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these craters and their dramatic rays

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were created less than 1 billion years

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ago when asteroids or comets hit the

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moon another really cool site you can

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see without a telescope is the Sea of

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Tranquility this is where the Apollo 11

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astronauts took humankind's first steps

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on the moon in 1969 you won't be able to

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see their footsteps or the flag they

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planted or the spacecraft even with a

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telescope now here are some facts about

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the moon it takes about twenty nine days

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to go around the earth once and it also

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takes the moon about 29 days to spin

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once on its axis this means we always

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see the same side of the moon

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as the moon orbits earth the portion we

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see illuminated changes we call these

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changes phases the first phase called

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the new moon is just a sliver and very

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difficult to see at first but each night

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it gets bigger and brighter the next

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phase is called the first quarter moon

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because it has traveled one quarter of

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its 29 day orbit it's the easiest phase

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to observe it rises at noon and sets at

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midnight a full moon is the next phase

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the full moon is behind earth in space

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with respect to the Sun the last quarter

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moon follows the full moon each night it

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rises later and we see less of it we'll

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have more to say about the moon next

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month plus meteors and Mars to learn

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www.cash or sky charts at education JPL

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nasa gov just click on the what's up