PAUL
Welcome to Idaho Skies for
the week of December 16th. We’re your hosts, Paul…
STEPHEN
…and Stephen.
PAUL
This week marks the beginning of
the Ursid meteor shower. Haven’t hear of it? Well, not many people have. It’s a
weak shower that only produces ten meteors per hour on average. Its parent body
is comet Tuttle. And as this comet approaches the sun, the sun’s heat vaporizes
the comet’s surface to release fine dust that can becomes meteors.
STEPHEN
Astronomers know that the Ursids
can produce over 100 meteors per hour on occasion. That’s because the
gravitational pull of Jupiter concentrates the meteor stream in places. When
this is going to occur, astronomers can’t accurately predict. Therefore, it
might be worth your while to look for this meteor shower occasionally this
week.
PAUL
Listeners observing this shower
need to identify meteors originating from the north. Specifically, from the
brightest star in the bowl of the Little Dipper. That star’s name is Kochab.
Kochab is slightly fainter than its more famous brethren, Polaris on the other
end of the Little Dipper.
STEPHEN
On the morning of the 17th,
stargazers will find the nearly third quarter moon close to the star Regulus.
That’s the brightest star in Leo the Lion. Then late on the night of the 18th,
you can use your binoculars to observe the craters long the terminator of the half
full moon. So there are two lunar events that you can enjoy this week.
PAUL
That’s Idaho Skies
for the week of December 16th.
STEPHEN
Be sure to follow us on Twitter @IdahoSkies for this
week’s event reminders and sky maps.
For Idaho Skies this is Stephen…
PAUL
…and Paul.
STEPHEN
Dark skies and bright stars.
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