This Week’s Sky at a Glance, January 15 – 23

Bright Capella high overhead, and equally bright Rigel in Orion’s foot, have almost the same right ascension. This means they cross your sky’s meridian at almost exactly the same time. So whenever Capella passes the zenith, Rigel marks true south, and vice versa. That happens around 9 or 10 p.m. now.

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