Welcome to Idaho Skies for the last week of May. We’re your hosts, Rachel…
PAUL
…and Paul.
RACHEL
The waning crescent moon forms a wonderful pair with brilliant Venus on the morning of the 25th.
PAUL
You’ll want to go outside at around 5:00 AM in order to see them.
RACHEL
The moon and Morning Star will be located in the low east-northeast.
PAUL
Their separation is less than 2 degrees.
RACHEL
Two degrees is the separation between two fingers when viewed from your outstretched hand.
PAUL
Two degrees of separation means they both fit neatly within the field of view of your binoculars.
RACHEL
Our innermost planet, Mercury reaches its greatest distance from the sun on the 25th.
PAUL
That evening the separation between Mercury and the sun is 23 degrees.
RACHEL
Unfortunately, for Idahoans, the average path of the planets across the sky tilts strongly towards the south.
PAUL
That’s because Idaho is located so far north of the equator.
RACHEL
As a result of the tilt, Mercury only appears nine degrees above the west-northwest horizon at 10:00 PM.
PAUL
Still, that’s the highest above the horizon and farthest from the sun that Mercury appears this year.
RACHEL
So if you’d like to see this elusive planet, you’ll have to search for it between 9:12 PM when the sun sets and 11:10 PM when Mercury sets.
PAUL
Around 10:15 would be best, when the sky is dark but Mercury isn’t too close to the horizon.
RACHEL
You won’t be able to miss Mercury; it’s the brightest star just above the west-northwest horizon.
PAUL
A two day old moon passes between Mercury and Jupiter on the evening of the 30th.
RACHEL
At two days old, the moon will be a thin sliver of a crescent.
PAUL
Look very low in the west just as its getting dark to find this trio.
RACHEL
Jupiter will jump out first as the brightest star in the west.
PAUL
Mercury and the moon are located below Jupiter and slightly to its right.
RACHEL
Jupiter and Mercury form a side by side pair.
PAUL
Mercury is the right partner of this pair.
RACHEL
The next day, the moon passes just below Jupiter.
PAUL
They’ll be just a bit too wide to be seen together in binoculars.
RACHEL
The moon and Jupiter are perfect binocular objects.
PAUL
That’s because lunar craters and some mountains are easy to see in binoculars.
RACHEL
As are the largest satellites of Jupiter.
PAUL
For your best views, prop your binoculars on a steady object.
RACHEL
That’s Idaho Skies for the last week of May. Join us next month for the space and astronomy events for Idaho.
PAUL
Be sure to read our blog for additional information. It’s at idahoskies.blogspot.com. For Idaho Skies this is Paul…
RACHEL
and Rachel.
PAUL
Dark skies and bright stars.
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