THIS WEEK - Winter begins at 4:20 am Saturday, Jupiter's moon Io pops out of the planet's shadow Wednesday and the moons have a wacky alignment next Saturday, Venus shines in the southwest at dusk, Mercury has great viewing before sunrise, Mars brightens below Castor and Pollux and there's a new Moon on the 30th. See your universe!

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#SkyandTelescope #Astronomy #Mars #Io #Jupiter #Mercury #Venus #Winter