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so if the moon looks red to you when you

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look outside in the early hours of

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tomorrow morning it's not your

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imagination we're actually going to get

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to experience a total lunar eclipse and

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here to tell us more about what to

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expect is dr michelle thaller from

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nasa's goddard space flight center

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thanks for joining us hey great to be

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here thank you

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so tell us what happens during an

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eclipse

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yes well when you see the moon shining

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in the night sky you're actually seeing

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reflected sunlight and tonight

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everything is going to be lined up

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perfectly so that the moon is going to

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pass through the shadow of the earth and

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that will block the sunlight so what you

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will see is this curved shadow moving

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across the full moon and during the

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deepest part of the eclipse the moon

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will actually look red it's a beautiful

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thing now the reason that happens that

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the only sunlight reaching the moon is

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light that's being scattered through the

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atmosphere of the earth and the earth's

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atmosphere scatters away blue light but

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lets red light through in a much more

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direct manner it's actually the reason a

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sunrise or a sunset looks red to us that

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red light is bouncing off the moon

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so what do we need to do to see this

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eclipse tomorrow

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well you know the wonderful thing about

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a lunar eclipse is you don't need

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anything special you don't need a

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telescope or eclipse glasses just go

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outside and find the full moon and if

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you're on the east coast it'll begin

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around 2 a.m you'll see the shadow pass

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across the moon and then the deepest

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reddest part will be about 3 45 a.m so

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i'm going to set my alarm clock for

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about 3 a.m get a cup of coffee and sit

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back for a beautiful free celestial show

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now tell us will this eclipse affect any

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nasa spacecraft well yes actually it

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does our spacecraft around the moon use

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solar batteries they need solar panels

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and sunlight so the eclipse will block

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the sunlight meaning the batteries will

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run down and of course we at nasa are

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aware of this we prepared for this we're

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going to be monitoring the health of lro

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the lunar reconnaissance orbiter which

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is currently orbiting the moon taking

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wonderful pictures and exactly how the

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batteries respond to this darkness will

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even help us design better batteries in

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the future

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tell us what are some of the things

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we're learning about the moon from the

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spacecrafts that are orbiting it

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well the moon seems so familiar to us

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but it turns out there's a lot to learn

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about its past its evolution over time

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lro is returning gorgeous images of the

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entire surface of the moon and to me

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they almost look like art you can see

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all of the craters and the mountains the

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scale of the moon is something that

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really impresses me this is a crater

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called tycho crater and in the middle of

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the crater there's a mountain and if you

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look at this close-up of that mountain

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there's sort of a lit up by the sun

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there's a boulder right at the top of

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that mountain but that boulder it looks

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small it's actually the size of a

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football stadium so there are these

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gorgeous tall mountains dramatic

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landscapes we're also learning that

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there's more frozen water ice underneath

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the soil of the moon than we expected

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and we've recorded the coldest

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temperature ever seen in the solar

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system at the south pole of the moon

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and where can we learn more about the

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moon and also this eclipse

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we'll definitely go to our website

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nasa.gov

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lro for lunar reconnaissance orbiter and

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there you can see all of these beautiful

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images you can see learn more about when

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to view the eclipse and find out more

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about all the different things we're

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learning about the moon