The constellation Ophiuchus was first observed by Ptolemy in the second century, aFabric masks are selling out all over the regionnd was the source of controversy last week after reports NASA had "discovered" a new zodiac sign.

The source of the rumour is an old NASA blog post that identifies Ophiuchus as a zodiac constellation.

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To be clear, NASA did not discover Ophiucus, nor does NASA control zodiac signs - they're not exactly scientific.

But if you want to spot this trouble-making constellation, head outside one night this week.

Look for the bright red star, Antares that forms part of Scorpio's body, then look north to find Ophiucus - a man wrestling with a serpent.

Other sights in the sky this week include the beginning of the Perseids meteor shower and Jupiter and Saturn's approach to one another in Saggitarius, where they will remain until December 22.