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[ ♪ ]

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What's Up for August?

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August 21st's total
solar eclipse

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traces a narrow path
across the nation,

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though most of the U.S. will
see a partial eclipse.

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Hello and welcome. I'm Jane
Houston Jones from

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NASA's Jet Propulsion Laboratory
in Pasadena, California.

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Not everyone can travel to the
narrow path of totality,

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so here are some things
to look for--

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no matter whether you see
totality or a partial eclipse.

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Before eclipse day, pack
your eclipse toolkit

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with a notebook, pen or pencil,
a clock, a stopwatch,

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the front page of a newspaper,
a thermometer,

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and a stick with a piece of
crepe paper tied to it.

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And bring an assistant
to help conduct

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some science observations.

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Practice using a citizen
science phone app

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to help you study clouds,
air and surface temperatures

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during the eclipse.

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A good one is the GLOBE app.

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Go to the location where
you'll view the eclipse

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and check for trees
and buildings

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that may obstruct your view.

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Totality lasts less
than 3 minutes

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so you may want to
focus on doing

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only one science observation.

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Or just really
experience the eclipse!

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Don't waste this
once-in-a-lifetime opportunity

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by watching it on
your phone's screen.

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Plan to have your safe
solar-viewing glasses

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within immediate reach--

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in your pocket or
around your neck--

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for quick eye protection
before and after totality.

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Just before totality, if you
have a good view of the horizon,

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look west for the
approaching shadow.

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After totality, look east
low on the horizon

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for the departing shadow.

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If it's cloudy try
to see the shadow

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by looking up at the
bottoms of the clouds.

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During totality, look for stars.

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Can you see Regulus
in the solar corona?

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The stars of Orion?

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How early and how late
is Venus visible?

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Can you see any other planets?

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Before and after totality
you may see

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moving waves of
light and shadow

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like the patterns you see on the
bottom of a swimming pool.

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How dark does it get
at totality?

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As it gets darker, look at the
newspaper you brought

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and see what's the smallest
print you can read.

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How much does the temperature
drop during totality?

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Does the wind start, stop,
or change direction?

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Watch and listen for changes in
animal and bird behavior.

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During the partial phases,

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use your hands as a
pinhole projector.

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You'll be able to see the
crescent shape of the sun

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projected through the spaces
created by your fingers.

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You can also make a paper
pinhole projector.

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In fact, any item with one or
more holes in it--

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like a kitchen colander

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a loosely woven straw hat,

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even leaves on trees will
project the crescent shapes.

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You can find out about all of
NASA's missions at:

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www.nasa.gov

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And you can find out more
about the eclipse--

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including eclipse safety--at:
eclipse2017.nasa.gov

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That's all for this month.
I'm Jane Houston Jones.

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NASA Jet Propulsion Laboratory