The Starry Dance
"This event will be impressive from today until about Monday, February 4, with the closest approach of the planets occurring on Friday, February 1. Enjoy! They say "close only counts in horseshoes and kisses". But here's a pretty cool near miss!
For the next few days you can go out in your own yard and see an event similar to the Star of Bethlehem. Depending upon weather (and sleep habits), you may be able to see a close approach of Jupiter and Venus. Great viewing for the next few days.
To see this spectacle, you'll need to look to the eastern sky just before dawn. Depending upon the terrain where you stand, you may first see the paired stars rising in the east around 5.40a. They'll appear later if there are trees or other obstructions on your horizon. The show will continue until the Sun rises and washes everything out around 7.30a. So there's a good viewing window for many of you, even if you're not normally early risers. Do take a look! You'll probably be out of bed by 7 anyway, so go outside!
Now, how does this compare to the Star of Bethlehem? Here are some helpful units, starting with what you already know, but moving to things you probably DON'T know:
A full circle = 360 degrees
Visible sky = around 180 degrees
Width of a finger held at armslength = about 2 degrees
One degree = 60 arcminutes
Resolving power of unaided human eye = about 3 arcminutes
One arcminute = 60 arcseconds
With that background. You'll see this clearly! On February 1, the planets will be separated by around 35 acrminutes. The resolving power of the unaided human eye is about 3 arcminutes, so they will appear very close, but still separable. The 2 BC Star of Bethlehem occurred when the two planets came within about 35 arcSECONDS of one another. About 60 times closer! The two became inseparable by even the best human eyes."


