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Nighttime Sky Markers for Where We Are in the Galaxy and Local Universe

Here are a few sky markers that can help you orient yourself relative to our position in the Milky…

Bright Light in the S/SW From Atlanta GA?

This is a pretty rich part of the sky since one is looking pretty much right toward the center…

How Did Erathosthenes Know when it was Noon in Alexandria When he Measured the Earth’s Circumference?

Hello Oscar, Eratosthenes actually measured the length of the shadow of a tall building in Alexandria when the Sun…

Is the Southern Cross Visible from Panama in Late October 2018?

Question: We will be visiting Panama at the end of October. Will we be able to see the Southern…

Where Can I View Neptune When It Reaches Closest Approach to Earth in September 2017?

Question: I wanted to inquire about Neptune’s close approach to Earth on September 5th of this year.  From the…

Atmospheric Phenomena that Produce What Appears to be Multiple Suns

Question: Can you please explain how we can see what appears to be two separate suns in the sky,…

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