Stellar Vista Observatory Sky Report for Jan. 24 – 30

The planets 50 minutes before sunrise on Saturday morning, Jan. 29. The horizon is translucent so you can see where the sun is (and Saturn, which is beyond it). Graphic created with SkySafariAstronomy.com, St. George News

Stellar Vista Observatory Sky Report
John Mosley

Jan. 24 – 30

The Sky Report is presented as a public service by the Stellar Vista Observatory, a nonprofit organization based in Kanab, Utah, which provides opportunities for people to observe, appreciate, and comprehend our starry night sky. Additional information can be found online at this link. Send questions and comments to John@StargazingAdventures.org.

Jupiter is the sole planet in the evening sky (not counting Uranus and Neptune, both visible in a small telescope in Aries and Aquarius respectively), and you’ll see Jupiter low in the west-southwest as the sky is growing dark. Jupiter far outshines even the brightest stars and its great brilliance lets you see it down to the horizon.

Jupiter sets a little more than two hours after the sun. In a week it will set 1-1/2 hours after the sun, in another week it will set 1 hour after the sun, and the week after we’ll lose it. Jupiter isn’t doing anything; we’re moving on ahead faster on our circular orbit so as to put the sun between us and Jupiter.

On the other side of the sky, Venus and Mars are returning to view during morning twilight. Mars rises a little earlier than Venus, but Venus is a full 100 times brighter, so you’ll use Venus to find Mars – which is 11 degrees to the right of Venus, or about the width of your fist held at arm’s length.

Venus has just moved between the earth and sun (it was most nearly in line with the sun on Jan. 8) and is very quickly gaining altitude. Watch it climb higher at the same time each morning. It’s low in morning twilight now, but compare its position in a month.

The best morning to look for Venus and Mars is Saturday when the moon joins them. The moon is a very thin crescent, but it’s twice as bright as Venus. The moon is well to the right of Venus, and on that morning Mars is 3 degrees to the upper left of the moon; both will fit in the view of binoculars and all are in Sagittarius. The bright orange star to the upper right of Mars is Antares, which means “rival of Mars,” in Scorpius.

The same four relatively bright comets that were visible in the evening sky last week are still visible, so if you have a telescope you still have a chance to track them down. They were mentioned last week, and previous Sky Reports are archived at the Stellar Vista Observatory website.

All the major winter constellations are up in the east as soon as the sky is dark, and that tells us that winter is truly upon us.

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